Individuals, who have one normal allele and one sickle cell allele, are able to resist malaria. This gives them a better chance of reaching reproductive age. This is known as impure breed advantage.
What is impure breed advantage ?Heterotic balance (impure breed advantage ) polymorphisms expand whilst the health ofimpure breed is better than the health of each pure breeds in a given population. A traditional case of balanced polymorphism in human populations is sickle cell anemia.
Thus, the impure breed advantage is a effective mechanism in keeping genetic polymorphisms, even for deleterious alleles.Many debilitating human sicknesses and a number of the exceptionally polymorphic blood organization.Read more about the polymorphisms:
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Compare the gravitational pull of the earth to that of the moon, the planets, and the sun.
Why did the population of stag horn's increase during the black band infection?
The population of stag horn's increase during the black band infection because they were not affected and there was less competition.
What is the stag horn?The stag horn is a type of coral found in coral reefs.
The stag horn is branching cylindrical coral.
The black band disease of corals is a microbial disease which results in tissue degradation of corals
During the black band disease of corals, the stage horns were not affected.
Therefore, the population of stag horn's increase during the black band infection because they were not affected and there was less competition.
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Geese that are exposed to a moving box during the first two days after hatching will imprint on the box. Geese that are totally isolated from any moving objects during the same period will never imprint on anything. These results show that
*
2 points
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a. young geese must see some type of box to imprint correctly.
b. the first two days after hatching are a critical period for imprinting in geese.
c. geese have an instinctive tendency to avoid moving, box-shaped objects.
d. geese must be exposed to their mother more than two days after hatching to imprint on her
Answer:
b. the first two days after hatching are a critical period for imprinting in geese.
Explanation:
If geese don't see a moving object first two days after birth, then they won't imprint on anything, thus first two days are important.
What idea did Francis Redi's experiment with the meat and maggots disprove?*
a. biogenesis
b. spontaneous generation
c. endosymbiosis
d. primordial soup
Answer:
B.
Explanation:
it’s called the spontaneous generation! It’s the answer to your question since to me it makes sense and I can just tell it’s correct. If you have any other questions just tell me and I’ll help in any way possible!
Hii I need this now I’ll give u brainliest
How does changing air pressure in earths atmosphere affect other things on earth such as weather?
How do human activities affect the global ocean?
Answer:
positive affects and negative
Explanation:
Habitat Destruction. Virtually all Ocean habitats have been affected in some way via drilling or mining, dredging for aggregates for concrete and other building materials, destructive anchoring, removal of corals and land “reclamation”.
How does the scientific naming system help all scientists understand
relationships among organisms?
Answer:
Scientific names are used to describe various species of organisms in a way that is universal so that scientists around the globe can readily identify the same animal.
Explanation:
Answer:
the different animal species that might have the same name or not so they use scientific description such as habitat genetics and appearance.
which two of the following arrows show matter moving from primary consumer to an omnivore
Answer:
A
Explanation:
Because
Caribou is a primary consumer
Bear is an omnivore
I need the answer quick please
Answer:I think that is correct I am not certain
Explanation:
do stems anchor plants into the earth and draw water and nutrients from the soil?
Answer:
The roots absorb water and minerals from the soil and anchor the plant in the ground. The stem supports the plant above ground, and carries the water and minerals to the leaves.
Explanation:
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One of the most important characteristics of a pesticide is how long it will stay deadly in the environment, a characteristic called ____.
Answer:
persistence
Explanation:
This characteristic is often describe as a way of
how long it will be useful, just like how long
will the pesticides could be useful in killing
the things that it is useful for in which is in
consistent with the given statement above.
This scientist is cretitded when established the theory of evolution
Answer:
Charles Darwin
Explanation:
Explain use of transact
The meaning of transact to operate or conduct something or an operation. The use of transact can be done in the sentence of business or transactions.
What is transaction?
It's an instance of selling or buying something. Transaction is related to money.
An exchange of goods to goods or money, or in taking out money. Transaction is used.
An example is taking money from ATM.
Thus, the meaning of transact to operate or conduct something or an operation. The use of transact can be done in the sentence of business or transactions.
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Answer:
The verb transact is almost always used with the word "business." To transact business is to conduct it, as when a shopkeeper sells groceries to a customer.
What is the primary function of the cardiovascular system?
Group of answer choices
Carry nutrients throughout the body
Secrete enzymes and hormones used by organs in the body
Supply macromolecules needed by other parts of the body
Support and regulate the body's homeostasis
Answer:
support and regulate the bodies homeostatis
Explanation:
Homeostatis is a type of mode your body goes into when it has no food for a prolonged period of time your body essentially eats your own fat to live
hope i helped
bye
Answer:
A
Explanation:
This is what your veins do, hence this is part of the cardio (vascular) system, if you are vascular then your veins pop out
In science, facts question 1 options: a) are absolute. b) may change. c) mean very little. d) are more important than theories.
In science, facts may change with time if new discoveries contradict them.
What are scientific facts?Facts, according to science, are observations that have been repeatedly found to be true.
However, that an observation has been found to be true on several occasions does not mean that it cannot change or become discarded totally.
Because science is dynamic, what is known as a fact today may be modified or discarded tomorrow due to new discoveries or observations.
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The graphs below show the average monthly rainfall in three ecosystems over three consecutive years. Which ecosystem is likely to
be the most stable?
Olivia looked under a microscope and saw tiny protists moving around on the slide from water in a pond near her house. She remembered what she had leamed about the cell theory as she observed the protists moving. All of the following are included in the cell theory except:
A. New cells are produced from existing cells.
B. Cells are the basic units of structure and function of living organisms.
C. Cells divide when they begin to grow too large to function.
D. All living things are made of cells
Answer:
She remembered what she had learned about the cell theory as she observed the protists moving. Which three ideas are included in the cell theory ..
Explanation:
Answer:
C. Cells divide when they begin to grow too large to function.
Explanation:
A, B, and D are all parts of the Cell Theory.
1.The digestive system relies on the______system to deliver the nutrients to the entire body of the organism.
2.The respiratory system provides oxygen to the ______system
3. Carbon dioxide from cell is delivered from the circulatory system back to the______system so it can exist the body
4. The circulatory system carries the waste from throughout the organism to the _____system, which takes care of excreting the waste from the organism:
5. The circulatory system and the _____system interact to deliver oxygen to and to remove carbon dioxide from cells.
Answer:
1_circulatory
2_circulatory
3_respiratory
4_excratory
5_respiratory
if the speed of a player doubles (2x) his kinetic energy will
what happens during digestion of food molecules like carbohydrates fats and proteins?
constituents of soil
please don't delete my question again
Answer:
Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water.
Explanation:
Soil is composed of both biotic—living and once-living things, like plants and insects—and abiotic materials—nonliving factors, like minerals, water, and air
Answer:
Nonliving factors, like minerals, water, and air. Soil contains air, water, and minerals as well as plant and animal matter, both living and dead.
Which of the following is not a concern associated with fossil fuel dependence?
a. global warming
. b. rising prices
C.
increased competition
d. increased development
Please select the best answer from the choices provided
A
B
О с
Answer:
D
Explanation:
It is not A. because fossil fuels contribute to global warming
Not B. since fossil fuels are finishing the prices are rising to buy fossil fuels
Not C. since less fossil fuel means more competition
D. because it is the only one left and there are other factors that increase development as well
I need help with number 1 and 2
Plants' leaves absorb energy from __________, which often comes from the Sun. What word completes the sentence?
Plants' leaves absorb energy from [tex]\boxed{\bf sunlight}[/tex], which often comes from the Sun.
Explanation:
Plants create glucose and oxygen from carbon dioxide and water in the presence of sunlight which provides energy for the reaction to occur.
Sunlight is an essential component during photosynthesis.
10)“If Jupiter was not there, there could be more terrestrial planets”. Explain how
Answer:
Soler system would not be well
Provide two examples that show how microorganisms help multicellular organisms survive.
Answer:
microorganisms rarely exist naturally as individuals, because one of their survival mechanisms is the ability to organize themselves into multicellular communities and to differentiate into specialized cell variants.
Explanation:
Microorganisms help living multicellular organisms by breaking down dead plant and animal tissues that help enrich the soil for farming, they also eliminate stocks of harmful bacteria that cause disease, noxious odors, and general unpleasantness. can do.
What are Microorganisms?A microorganism is a type of organism of microscopic size that can exist in its single-celled form or as a colony of cells. An organism that can only be seen through a microscope includes bacteria, protozoa, algae, and fungi. Although viruses are not considered living organisms, they are sometimes classified as microorganisms.
They operate the basic drug cycles which is necessary for the plants' supply of nutrients through the reaction of organic matter in soil.
Every human body is host to 10 microorganisms for every human cell that contribute to digestion, produce vitamin K, promote immune system development, and detoxify harmful chemicals.
Thus, microorganisms help living multicellular organisms by breaking down dead plant and animal tissues that help enrich the soil for farming, they also eliminate stocks of harmful bacteria that cause disease, noxious odors, and general unpleasantness. can do.
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A red blood cell is 8um in diameter
A bacterial cell is 40 times smaller
Calculate the diameter of the bacterial cell
tick one box
0.02um
0.2um
2.0um
20.0um
Answer: The answer is 0.2 um
Explanation: This is a simple division problem. 8 um/40 = 0.2 um
plss help!!
Explain why oxygen is critically important to all living things. Then explain how humans, flatworm,s and a plant get the oxygen they need to survive
Answer:
Humans get oxygen via breathing through the nose or mouth.
Flatworms get oxygen through their pores via the process of diffusion.
Plants get oxygen through the stomata.
Explanation:
The heart has 4 valves. explain how one of them works.
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Hydrogen peroxide is a natural byproduct of cellular metabolism in the human body. It sometimes reacts with certain ions in the body to produce a very reactive, electron-grabbing form of hydroxide (OH-) that has been observed to kill healthy cells in vitro. This product can be considered a
Hydrogen peroxide is a natural byproduct of cellular metabolism in the human body. This product can be considered a free radical.
What is free radical?A free radical may be described as any molecular species able to impartial life that consists of an unpaired electron in an atomic orbital. The presence of unpaired electron effects in sure not unusualplace homes which can be shared via way of means of maximum radicals. Many radicals are volatile and especially reactive.
These free radicals were recommended to be chargeable for reperfusion-triggered cardiac lovely and reperfusion-triggered arrhythmia. Hydrogen peroxide (H2O2) is frequently used as an experimental supply of oxygen-derived unfastened radicals.
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