Question

What is one example of a phenotypic change that is not genetic?


a. Artificial selection is used to produce birds with purple feathers.

b. Humans are larger than they were 100 years ago.

c. There is an increase in the number of dark moths in a population.

d. Changes occurred in the body shape of invertebrates over time.

Answer 1

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Humans are larger than they were 100 years ago.


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Answer 2

Option (b).

Explanation:

• The genotype is the genetic constitution of the individual where as the phenotype is the physical appearance.
• The phenotype of the organisms can be influenced both by the environment as well as by the genetic factor as well.
• The increase in human height is due to the environmental factor because tall individual has less chances of the diseases.
• Taller woman has less complication in their delivery and also enhances their physical fitness.

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