Which factors were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection?
(1 point)

1. a change in the diet of human populations as they settled in colder climates

2. the clothing worn by humans in the early 8th century

3.the interaction of human populations with predators in colder climates

4.the impact of UV radiation on folate and Vitamin D levels in human populations

Answer: The answer is 4

Explanation:

Vitamin D controls your skin pigment. It's kind of like when someone has an iron deficiency they get bruises and they turn a whiter shade.

Hope I helped :)

The factors that were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection are the impact of UV radiation on folate and Vitamin D levels in human populations.

 Ultraviolet B radiation produces diet D in human skin. Ultraviolet radiation can, however, smash folate. Folate is critical for the speedy increase of cells, particularly at some point in which its deficiency can motivate neural tube defects. The human frame additionally has a mechanism to save you overproduction of vitamins.

Ultraviolet is a shape of electromagnetic radiation with a wavelength from 10 nm to four hundred nm, shorter than that of seen light, but longer than X-rays. UV radiation is found in sunlight and constitutes approximately 10% of the whole electromagnetic radiation output from the Sun.

Thus it is learned that the above answers are well-explained factors that were determined to directly cause the loss of skin pigmentation in humans as a result of natural selection bout.

To learn more about natural selection refer to the link :

https://brainly.com/question/23929271

Which is NOT an essential property of the genetic material?

Where is sugar made in plant cells?
O golgi apparatus
chloroplast
centriole
mitochondria

Ps.The answer is B,

William meets Kate They both share many of the same beliefs and interests. Based on the effects of similarity on
attraction, which of the following is most likely to be William's reaction?
A William will be more likely to trust Kate than he would a stranger
B. William will be more attracted to Kate than he would a stranger.
C. William will be more likely to love Kate than he would a stranger
D. William will be more likely to distrust Kate than he would a stranger
Please select the best answer from the choices provided
A

Describe the components of a buffer and the role each
plays in helping maintain a constant pH.

How does an individual with a competitive advantage lead to the evolution of an entire species?(1 point)

A) Some individuals are better at competing for resources, and that allows them to survive droughts or other major ecological events, leading to the extinction of certain species and the survival of others.

B) Traits that are advantageous help certain individuals reproduce at higher rates, so those traits are more common within the population.

C) Those who have traits that help them survive are able to reproduce, and their offspring have those traits, leading to a change in the species over time.

D) Individuals that survive due to their competitive advantage are able to expand their range, similar to how the finches radiated out from one common ancestor on the mainland.

Select the correct answer.
Wanda owns a dog. She takes the dog for a routine examination to her veterinarian. The veterinarian tells her that her dog's kneecap is not
properly centered over the knee. Which disorder does this indicate?
OA.
osteoarthritis
OB. cruciate ligament disease
OC. patellar luxation
OD. hip dysplasia

Which of the following is an example of the endocrine System maintaining homeostasis?

A- detecting a pain stimulus and sending a signal to the signal cord to perform an automatic response.

B-passing information about the body temperature from the hypothalamus to the sweat glands or muscles.

C-producing and excessive amount of hormones in the blood and not sending a signal to stop production.

D- using sense organs to get information about the outside world and direct an appropriate body response.

Suppose you travel to a tropical place like the Bahamas and watch the coastal poikilotherms, such as fish, crabs, and starfish, swim and crawl about in the warm waters. Suppose then that you travel to northern Maine and watch the related species of poikilotherms in the cold waters there. It would not be unreasonable to expect to see the animals in Maine moving about in slow motion compared to those in the Bahamas. In fact, however, rates of locomotion are likely to look to your eye to be more similar than different in the two places. Design experiments to assess whether the Maine animals are especially able to be active in cold waters. If you find that they are, how might their high ability for activity in cold waters be explained

Definition: This is an organism's response to a stimulus developed by being taught or watching another organism. Example: how to open a soda when you're thirsty

What is happening to glaciers over time. What is causing the change?

The 'good' bacteria living in a
digestive tract to remove other
forms of bacteria is an example of...
A. a parasite.
B. mutualism.
C. commensalism.

Energy is released during chemical reactions that occur in

Explain how carbon dioxide and oxygen are used by living organisms

Which hormone produces increases in size, especially in stem and fruits? auxin cytokinin gibberellin ethylene

Miss treatment or blank is defined as any action that inflicts pain suffering or injury

which of these features is most likely formed as a result of the movement of earth plates in the diagram?

Why can king snakes eat rattlesnakes ?

Channels utilizing facilitated diffusion
A allow things to enter and leave the cell
B require ATP
С
both A and B
D
none of the above

I’ll mark as BRANLIEST!!!

75 POINTS!!!

-Use your codon chart to determine the amino acid sequence

1.) DNA: CCT CTT TAC ACA CGG
mRNA:
protein:

2.) DNA: AGA ACA TAA TAC CTC
mRNA:
protein:

3.) DNA: TAC CTT GG GAA TAT
mRNA:
protein:

In the experiment, "Do white cats eat more than black cats?" the independent variable would be:
the color of the cat.
how much each cat weighs.
how much food each cat eats.
the temperature of the food.

difference between respiration and breathing

17. What does Mesozoic mean? What was abundant during this time?

Lab: Interdependence of Organisms
Assignment: Lab Report


Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately.

Your work will not be submitted to your teacher until you click Submit.

define flower gardening​

Which of the following is leastlikely to be a result of climate change?
O A Increased biodiversity of tree species
O B Expanded agricultural regions
O Expanded tourism in cold regions
O Increased frequency of severe weather

The (_______) has increased consumer knowledge about the connection between food and health.

A model of evolution is shown here. The original population has alleles for type A blood (red) and alleles for type B blood
(blue). Which statements are supported by the information in the model? Please select ALL that apply,
A)
The genetic diversity for islands A and C is reduced after genetic drift.
B)
The founder effect is a mechanism of evolution that includes a random
factor that influences allele changes.
Islands A and C had founding members with very different allele
combinations than the original mainland population.
D)
The members of the founding population for island B are the most
representative of the original population on the mainland.
Islands A and C have undergone natural selection, which reduced the
genetic variation of the alleles on each of those two islands,
E)

Protein Synthesis Practice Worksheet



Example

DNA : G T A C G C G T A T A C C G A C A T T C

mRNA: C A U G C G C A U A U G G C U G U A A G

Codons: AUG-CGC-AUA-UGG-CUG-UAA

Anticodons: UAC-GCG-UAU-ACC-GAC-AUU

Amino Acids: METHIONINE-ARGININE-ISOLEUCINE-TRYPTOPHAN-LEUCINE

Using the example above, transcribe the following DNA strand into mRNA and translate that strand into a polypeptide chain, identifying the codons, anticodons, and amino acid sequence.



1. DNA: G C T A G C T A G C A A T A C G T G T A C A T C G



mRNA: C G A U C G A U C G U U A U G C A C A U G U A G C



Codon:



Anticodon:



Amino Acids:



2. DNA: T A C G C T T A G C T A G C T A G C T A G C T A G C T G A T C G A



mRNA: A U G C G A A U C G A U C G A U C G A U C G A U C G A C U A G C U



Codon:



Anitcodon:



Amino Acids:

3. DNA: C G T A C A T C G A C T G A T C G A T C A T C



mRNA: G C A U G U A G C U G A C U A G C U A G U A G



Codon:



Anitcodon:



Amino Acids:







4. DNA: T A T A T A C G A T C G T A G C T A



mRNA: A U A U A U G C U A G C A U C G A U



Codon:



Anitcodon:



Amino Acids:





Transcribe the following DNA strand into mRNA and translate that strand into a polypeptide chain, identifying the codons, anticodons, and amino acid sequence.

DNA: G C A T A C T A A A T C G A T C G T A A C T G A T C

MRNA: C GU A U G A U U U A G C U A G C A U U G A C U A G

Codon:

Anticodon:

Amino Acids:

AMP-PNP is the abbreviation for a structural analogue of ATP in which the second and third phosphate groups are linked by an NH group (instead of an oxygen atom). AMP- PNP can bind to the ATP-binding site of most ATPases. It differs from ATP in that the
terminal phosphate cannot be removed by hydrolysis (so you cannot create ADP, therefore, you cannot get energy from AMP-PNP). Based on this information, explain the following

a. When isolated myofibrils are placed in a flask containing Ca2+ and AMP-PNP, contraction is quickly arrested. Where in the contraction cycle will contraction stop? Be specific.
b. What affects would you predict for cilia on a paramecium to which AMP-PNP is added? Be specific as to the proteins / molecules whose function would be inhibited and what would be the overall affect?
c. When researchers incubated purified vesicles, axoplasm (containing motor proteins), and MT from the giant squid axon and added AMP-PNP, the vesicles did not move along the MT. Explain this observation using specific proteins / processes affected.

describe the process of transformation from start to finish. Be sure to use the following terms in your response: restriction enzyme, ligase, plasmid, DNA, protein, gene, and sticky ends, and recombinant DNA.