(Q005) Humans are unusual because our cultural practices can actually change our environmental circumstances. We can change the environment in which natural selection acts on our traits. Describe how this process has played out in the evolution of adult lactose tolerance. Describe how this process has played out in the maintenance of the sickle-cell trait. Can you hypothesize any similar situations where our future evolution may be influenced by cultural practices we have today?

Answers

Answer 1

Answer:

sickle cell disease or sickle cell disease is about the inheritance of metaplastic cells or cells that do not respect normal cell morphology from the mother or father to a child.

This is not associated with cultures, instead lactose tolerance is.

Explanation:

Lactose tolerance is basically an adaptation of the body in those humans who continue to drink milk throughout their lives, once the growth stage is over, milk should be suspended, although some continue to consume it and lactase continues to be encoded and expressed.

Some people for cultural reasons or environmentalist lifestyles do not drink animal milk, but rather vegetable milk.


Related Questions

PLEASE HELP URGENT!!! I WILL GIVE BRAINLIEST

Answers

Answer:

Explanation:

2. amoxicillin works against a wider variety of bacteria

3. narrow spectrum antibiotics work on a few types of bacteria and broad spectrum antibiotics target many types of bacteria

4. the overuse of antibiotics can lead to bacteria becoming resistant to treatment, which can lead to needing stronger antibiotics

NEED HELP ASAP! 100 POINTS!!
A lab experiment is created to see how the amount of solute affects the temperature needed to dissolve the solute completely. 2, 4, 6, and 8 grams of a salt are place in a small test tube with 15mL of water. The test tubes are then heated until the salt completely dissolves. Unfortunately, the test tube with 8 grams of salt never completely dissolves at any temperature. Suggest two changes to the procedure that might solve this problem.

Answers

Answer:

Rise the heat and lower the amount of salt

Explanation:

What is the maximum magnification of most classroom compound light microscopes?
O 100x
O 500x
O 1,000x
O 5,000x

Answers

Answer:

C. 1,000x

Explanation:

Answer: 1000x c

Explanation:

Changes in species can be seen in fossils trapped
in sedimentary rock.

Answers

Yea u are correct :)

Which type of rock is non-foliated metamorphic rock?

Answers

Answer:

slate, phyllite,schist and gneiss

Answer:

Letter A: Gneiss

Explanation:

Cells that become the _________ undergo a ____________ to __________ transition first. Fill in the blanks.

Answers

Cells that become the Sclerotome undergo a epithelial to mesenchymal transition first.

Matter and energy can never bee created or destroyed. Explain how photosynthesis and cellular respiration demonstrate this law of nature.

Answers

They are both connected to each other. The products of photosynthesis (oxygen and glucose), is used as reactions for cellular respiration. The products of cellular respiration (carbon dioxide, water, and energy) is used as reactions for photosynthesis. So the energy is never created nor lost, the energy is just transferred for the other processes uses.

Hope this helps :)

They're linked. Cellular respiration uses oxygen and glucose from photosynthesis. Photosynthesis uses carbon dioxide, water, and energy from cellular respiration. Energy is transferred to other processes, not created or lost.

What is law of conservation of matter and energy?

According to the law of conservation of mass or principle of mass conservation, any system that is closed to all exchanges of matter and energy must have a constant mass over time since the system's mass cannot vary and neither add nor subtract quantity.

Photosynthesis and cellular respiration are connected. Oxygen and glucose are obtained through photosynthesis and used in the process of cellular respiration. Carbon dioxide, water, and the energy released during cellular respiration are the three primary components of photosynthesis. Energy is not created nor destroyed; rather, it is transferred to other processes.

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What is the function of NADPH and ATP

A. they are light-reflecting pigments

B. They transfer energy from light to the Calvin cycle

C. They absorb light

D. They power the light-dependent reactions

Answers

B.) They transfer energy from the light to the Calvin cycle!

Which mechanism best describes the process by which nutrients are taken up at the apical surface of the epithelial cells that line the guy and released from their basal and lateral surfaces?

a. Proteins are tethered to the cell cortex
b. Proteins are tethered to the extracellular matrix
c. Protista are tethered to the proteins on the surface of another cell
d. Protein movement is limited by the presence of a diffusion barrier

Answers

Answer:

The correct answer is option d. "Protein movement is limited by the presence of a diffusion barrier".

Explanation:

There are transportation mechanisms that allow to take up nutrients to the apical surface of the epithelial cells. The transportation process is best describes as protein movement limited by the presence of a diffusion barrier. There are structures known as tight junctions, located just below the apical surface . These tight junctions acts as diffusion barriers, separating the  extracellular fluids surrounding the apical and basolateral membranes.

PLEASE HELP!

1. How does a clock and its internal and intricate mechanical parts make up a system(Explain)


2. Is it a living or nonliving system? (Explain)


3. How may it support a living system? (Explain)


4. Therefore what is an good example of a definition of a system?

Answers

Answer:

1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.

Some mechanical clocks comprise of at least 10 parts namely:

Gear train: This component alone is a sub-system that comprises of at least 8 parts. These parts are broadly classified into wheels, pinions, and barrels.Main SpringPalletEscapement Escapement WheelBarrell Barrell WheelBalance Spring etc

2. A clock is a non-living system.

Living systems have certain characteristics. Some of them are:

Stimuli: Response to the environmentGrowth and development: The are able to increase in size and dimensionsHomeostasis: this is the capability of self-regulation regardless of external conditions such as temperature and pressure.   etc

3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.

4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.

Cheers

The Convention on Biological Diversity has goals that ________.

a. that ensure the distribution of biodiversity's benefits to wealthy countries who can pay for them
b. that require biodiversity be used in a sustainable manner
c. designed to reduce biodiversity
d. that include a set of international laws
e. spelling out future management plans for all biomes

Answers

Answer:

b. that require biodiversity be used in a sustainable manner

Explanation:

The Convention on Biological Diversity is a multilateral treaty that focuses on the use of biodiversity in a sustainable manner. The Convention on Biological Diversity is ratified by 196 nations.

There are majorly three goals of The Convention that include conservation of biodiversity; sustainable use of biodiversity; and equal sharing of genetic resources benefits.

Hence, the correct answer is "b. that require biodiversity be used in a sustainable manner".

simply means lessen the use of unnecessary materials

Answers

Answer:

ok

Explanation:

okokokokokokokkokokok0k0k

Reduce: simply means lessen the use of unnecessary materials.

Waste management can be defined as the processes, schemes, activities and actions that are typically required to collect, treat and manage (handle) a waste material from its creation to its final disposal.

Basically, some importance of waste management are:

I. It makes planet Earth free from garbage or waste materials.

II. It promotes a clean, beautiful and healthful environment.

III. It helps to transform garbage or waste materials into something useful through recycling.

The 5Rs of waste management generally refers to an efficient, effective and modern way of managing garbage and waste material, these include:

Refuse.Reduce.Reuse.Repurpose.Recycle.

Reduce is a waste management technique which involves lessening the use of unnecessary materials in the performance of a task.

For example, biodegradable materials can be burned to lessen waste.

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Many chemical reactions take place in living things. All chemical reactions have a certain amount of energy that must be supplied in order to make the reaction begin. This is called

Answers

Answer:

Activation energy...!

Explanation:

Which compound is a hydrocarbon?
A. C2H6
B.CO2
C. C6H12O6
D. H2O

Answers

A. C2H6 I am positive it’s a

Draw an arrow between two points on earth that used to be connected

Answers

From North Pole to South Pole

Explain the role of different parts of renal tubules of nephron in urine formation

Answers

Answer:The nephrons of the kidneys process blood and create urine through a process of filtration, reabsorption, and secretion. Urine is about 95% water and 5% waste products. Nitrogenous wastes excreted in urine include urea, creatinine, ammonia, and uric acid.

Explanation:

What would be the expected result if a competitive, nonhydrolyzable analog of ATP were applied to the cytoplasmic side of a plasma membrane that contained a large concentration of the Na+/K+ pump? What would be the expected result if a competitive, nonhydrolyzable analog of ATP were applied to the cytoplasmic side of a plasma membrane that contained a large concentration of the Na+/K+ pump? The cell would accumulate Na+, but there would be no effect on K+. The cell would accumulate K+, but there would be no effect on Na+. The cell interior would experience higher than normal Na+ concentrations and lower than normal K+ concentrations. Both Na+ and K+ would accumulate outside of the cell.

Answers

Answer:

The cell interior would experience higher than normal Na+ concentrations and lower than normal K+ concentrations.

Explanation:

The Na/⁺K⁺ pump is an ATPase pump which is responsible for maintaining low Na⁺ and high K⁺ concentrations within the cytoplasm while maintaining high Na⁺ and low K⁺ concentrations in the extracellular fluid.

Since these two ions are moved against their concentration gradient, ATP hydrolysis is required to provide the energy for this process. This is done by moving in two K⁺ ions  inside while moving three Na⁺ ions outside the cell for every molecule of ATP hydrolysed to ADP and Pi.

If a competitive non-hydrolyzable analog of ATP is applied on the cytoplasmic side of a plasma membrane that contained a large concentration of the Na/⁺K⁺ pump, it will act by inhibiting the action of the Na/⁺K⁺ pump. This will result in an accumulation of Na⁺ ions inside the cell and lower than normal K⁺ ions concentration.

How is the moon involved in the
hydrologic cycle?
B. it helps water evaporate
A. it provides light
C. it cools the Earth
D. it causes tides

Answers

Answer:

Explanation:

it cools the Earth

The moon does affect evaporation. The heat from the sun which is reflected off of the moon helps to evaporate and sublime water at night. It also helps evaporation during the day. During eclipses however, the moon really slows down the process of evaporation by covering up the sun.

So it’s ( it helps water evaporate) hope this helps if not let me know so I can try again:)

Which two factors are responsible for seasons on Earth?
A. Greenhouse gases and ozone in the atmosphere
B. Earth's tilted axis and its rotation around it
C. Trade winds and sea breezes
D. Earth's tilted axis and its revolution around the sun

Answers

Answer:

D

Explanation:

The short explanation is how the earth is tilted towards the sun, and it's revolution will cause certain parts to be closer or farther relatively to the sun. Hope this helps

The change in season is brought on by the earth's tilted axis and its revolution around the sun. Therefore, option (D) is correct.




Why do we have seasons ?

The seasons are caused by Earth's tilted axis. Different regions of the Earth are exposed to the Sun's strongest rays at various times of the year. Therefore, the Northern Hemisphere experiences summer when the North Pole tilts toward the Sun. Additionally, winter in the Northern Hemisphere occurs when the South Pole tilts toward the Sun.

The Northern Hemisphere experiences summer in June because the Sun shines more intensely there than at any other time of the year. The Northern Hemisphere experiences winter in December because it is the month when the South Pole is oriented toward the Sun.

Therefore, option (D) tilted axis and revolution are reasons for the seasons.

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Really Need This >:3


A

B

C

Answers

Answer:

I'm pretty sure it's A

Explanation:

To compress means to push together. I hope this helps

I think it is B yea it should be B

We could tell by the rotten smell, that something putrid was in our trash can
Explain the word putrid

A ample
B alive
C Rotten
D appealing

Answers

Answer

The answer is c

Explanation:

The correct answer is C rotten

we the people of the United states in order to form a more perfect union..."what was the purpose of the introduction that begins with these words?

Answers

Answer:

The preamble sets the stage for the Constitution, It clearly communicates the intentions of the framers and the purpose of the document. The preamble is an introduction to the highest law of the land; it is not the law. It does not define government powers or individual rights.

Establish Justice is the first of five objectives outlined in the 52-word paragraph that the Framers drafted in six weeks during the hot Philadelphia summer of 1787. They found a way to agree on the following basic principles:

"We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America."

I think.

Explanation:

You're a forensic scientist who discovers a frozen body with a broken leg. There's highly visible bruising around the fracture site. What could you safely estimate about the length of the time between the leg breaking and the time of death?
The victim dies within a few days of breaking their leg.
the victim died within a week of breaking their leg.
The victim died about two weeks after breaking their leg.
The victim died at least three weeks after he broke their leg? ​

Answers

I just took the test, the correct answer is “The victim dies within a few days of breaking their leg.”

From the forensic investigation, it can be estimated that the victim with a broken leg has been died within a week of breaking their leg. Thus, the correct option is A.

What is Forensic Science?

Forensic science is also known as criminalistics. It is the application of science to study the criminal and investigation purpose. In civil laws, mainly, it is used on the criminal side. During criminal investigation, as governed by the legal standards of admissible evidence and the criminal procedure.

Forensic scientists are the experts who do the investigation of a crime scene and find what and how the crime has been taken place and who is the criminal.

In the given question, a frozen body has been discovered with a broken leg with highly visible bruises. Bruises on the body indicates injury which could be the result of defending self from the criminal. Thus, it can be estimated that the victim died within a week of breaking their leg.

Therefore, the correct option is A.

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I've had my cat for three years. In that time she's gained half a pound. Explain the origin of her increased mass and whether atoms are still the same atoms as when she consumed them. ​

Answers

She has been eating creating additional atoms creating more mass and mass is the same as wen it was consumed

The knee ________.
a. is completely enclosed by a strong articular capsule
b. is a multiaxial joint
c. has ligaments present inside as well as surrounding the articular capsule
d. is the simplest joint in the body

Answers

Answer:

The correct answer is: C) has ligaments present inside as well as surrounding the articular capsule.

Explanation:

The knee joint is a hinge (ginglymus) type synovial joint that is formed by three different bones: the femur, the tibia, and the patella.

Given the nature of the hinge joint, it should only allow flexion and extension, but it also grants a small degree of internal and external rotation. For this reason, the knee joint cannot be considered a multiaxial joint, since it only fully moves in one axis and slightly moves in a second one (this is why most people consider the knee joint a uniaxial joint, but some others say it is actually a biaxial one).

The knee joint isn't completely enclosed by a strong articular capsule. The knee joint is rather thin and it contains the patella, menisci, bursae, and ligaments of the knee.

The knee is not the simplest joint in the body. It is formed by three bones and there's also the menisci, which are fibrocartilaginous structures that help increase the stability of the joint and act as shock absorbers as well.

The knee does have ligaments both inside and outside the articular capsule. The intracapsular ligaments are two cruciate ligaments (one anterior and one posterior), which hold the tibia in place; the transverse ligament that connects both menisci; and the posterior and anterior meniscofemoral ligaments. The extracapsular ligaments are the patellar ligaments (connects the patella to the tibia), the two collateral ligaments (medial and fibular, one on each side of the knee, connecting the femur to the tibia and to the fibula, respectively), and the anterolateral ligament.

Which of these is describing a Eutrophic Lake?

Mucky Water
Cold Water
Low Biodiversity
Rocky Bottomed

Plz answer I need help thank you

Answers

Answer:

Mucky water and rocky bottom

Answer:

mucy water ..........

in high elevation forests n Pennsylvania, ecologists have noticed a serious decline in certain tree species. Some scientists propose that increased soil acidity might be the cause. Whats the phenomenon? A. Mercury contamination B. Decreased in pH caused by climate change C. Acid rain, which is caused by SO2 from combustion mixed with atmospheric water vapor D. Ozone depletion

Answers

Answer:

I would choose answer B.

Explanation:

Acid rain is caused by combustion chemicals mixing with water vapor in the atmosphere. It normally results in high amounts of acid in the soil, and surrounding bodies of water.

what is the last thing that happens when a cell divides to produce two new identical cells

Answers

Answer:

The last phase of cell division is cytokinesis. In this phase the cytoplasm of parent cell divides in to two cells called as daughter cells. It occurs during late stages of nuclear division.

The visible change of cytokinesis in an animal cell can be observed as formation of Furrow or Pucker on the cell surface.

it helps to promoting growth of roots and absorption of nutrients.

Answers

Answer:oil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.

The football team has a total of 25 jerseys . There are 5 mediums-sized jerseys . What percent of the Jerseys are médium-sized Jersey?

Answers

Answer:

20% or 0.2

Explanation:

if u divide 5 by 25, u get 0.2, which in decimal form is 20%

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