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3 years ago

Which is an environmental factor that affects skin color in humans?

Biology

2 answers:

dmitriy555 [2]3 years ago

5 0

Answer:

amount of sunlight absorbed

Explanation:

Sunlight is from the environment and when we are exposed to sun, our skin is darker. The more sun we are exposed to, the darker our skin is, hence tanning.

Genes are not an environmental factor.

Food does not affect our skin colour.

Natalija [7]3 years ago

5 0

Amount of sunlight. The food consumed does not directly affect skin colour unless you’re considering eating too much carrots. Numbers of genes are genetic factors, not environmental factors

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Which are not displayed on a graph?

vivado [14]

Answer: First option is correct.

Explanation:

Since measurements, observations, and data can be displayed on a graph, whereas predictions can not be displayed on a graph.

When we have the collected data, we can display with the help of graph.

When we have observations, we can display it too.

When we have measurements, we can also display it.

All those things which are in numerical terms, we can display it on the graph.

But prediction is just an assumptions that an individual is supposing to occur, so it may be not in numerical terms.

Hence, First option is correct.

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3 years ago

A section of DNA is shown.

iren [92.7K]

The correct answer is D.

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2 years ago

Which of these is a disadvantage of using natural gas?

kaheart [24]

Since you say ‘which’ , in order to answer you, we would need the options you are given, but my answer would be
1. Not reusable
2. Might use up someday
3. Burning it will produce carbon dioxide and worsen global warming

Hope these can help :)

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2 years ago

What were the events of prosit evolution?

ycow [4]

Answer:

srtbsrtbsrtbsrtb

Explanation:

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3 years ago

What are the genotypic and phenotypic distributions for the F1 and F2 generations from a cross between a chick with black (BB) f

lord [1]

Answer:

Please find the punnet square to this question as an attachment

F1 generation:

genotype = BW

Phenotype = Erminette offsprings

F2 generation:

genotype = BB (1): BW(2): WW(1)

Phenotype = 1 Black, 2 Erminette, 1White

Explanation:

This question involves a gene coding for feather color in chickens. The allele for black feathers (B) is codominant with the allele for white feathers (W) to form an erminette chicken (black and white speckles).

According to this question, a cross between a chick with black (BB) feathers and chicken with white (WW) feathers will result in an all erminette chicken (BW) in the F1 generation (see attached image)

Also, in the F2 generation got by self-crossing the Erminette genotype in the F1 generation (BW), the following genotypic and phenotypic ratios are observed:

Genotypic ratio = BB (1): BW(2): WW(1)

Phenotypic ratio = 1 Black, 2 Erminette, 1White

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3 years ago