Two Identical Twins Were Separated at Birth,one Grew Up in a Prosperous

question 24

Multiple Choice

Two identical twins were separated at birth,one grew up in a prosperous home with ample food and time for rest.The other twin was tragically abandoned and grew up in and out of foster homes and living on the streets.After more than 20 years,the two twins were reunited,but despite their identical genomes,the twins looked very different.The most noticeable difference was their difference in stature,the prosperous twin was tall and well built,while the abandoned twin was short and scrawny.How can you explain these differences?

• A)The twins actually have different genotypes.
• B)The poor twin was undernourished as a child,and as a result his genes that control height and stature were mutated,resulting in a different phenotype.
• C)The poor twin was undernourished as a child,and as a result he was unable to reach the full potential of his genes.
• D)Traits such as height and stature are are not controlled by a person's genes,rather they are determined by environmental factors,such as nutrition,rest,and exercise.
• E)Twins often have different phenotypes,because one twin gets more resources in the womb than the other.

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Definitions:

Custodial fathers

Fathers who have been granted primary legal and physical custody of their children following a separation or divorce.

Divorced mothers

Women who have legally ended their marriages and are responsible for caring for their children as single parents.

Nontraditional family

A family structure that differs from societal norms, such as single-parent families or families with same-sex parents.

Socioeconomic standing

A composite measure of an individual's or family's economic and social position in relation to others, based on income, education, and occupation.