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Family Resemblance and Genetics Quiz

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Questions and Answers

What inspired Eric Mueller to start photographing related people for his book Family Resemblance?

The complex interplay of genes in shaping facial structures.

The striking resemblance he saw between himself and his birth mother. (correct)

The noticeable diversity in facial genetics among families.

The desire to prove a strong genetic influence on facial features.

Based on the text, why do researchers like Benedikt Hallgrímsson believe gene-level explanations might not be sufficient to understand facial features?

Because facial genetics are too complex to rely on individual gene analysis. (correct)

Due to the limited number of genes influencing facial shape.

To highlight the predictability of genetic influences on faces.

As a way to simplify the study of facial development.

What does the text suggest about predicting a person's face based on individual genes?

It is nearly impossible due to the subtle effects of each gene. (correct)

It requires examining genes in isolation from each other.

It is quite easy due to the significant impact of each gene.

It involves analyzing only a few key genes.

Why do scientists believe they may need to look beyond gene-level explanations to understand facial features?

To account for the impact of hundreds of genes working together. Signup and view all the answers

What is one of the challenges highlighted in the text regarding studying facial genetics?

The difficulty in predicting a person's face from individual gene analysis. Signup and view all the answers

What alternative approach are researchers considering to understand facial development?

Grouping genes into teams that work together during face formation. Signup and view all the answers

What technique did geneticists use to understand normal faces by quantifying thousands of faces and measuring the distances between landmarks?

Genome-wide association study Signup and view all the answers

Why did geneticists start with identifying genes responsible for facial abnormalities like Crouzon syndrome and Treacher Collins syndrome?

To study extreme cases that are easily identifiable Signup and view all the answers

According to geneticist Seth Weinberg, what causes an individual's facial appearance?

The balance of genes pushing outward and inward Signup and view all the answers

What percentage of the differences in faces can be explained by known genetic variants according to a survey from the 2022 Annual Review of Genomics and Human Genetics?

14% Signup and view all the answers

Why did geneticists screen the genomes of individuals who had quantified normal faces?

To determine if genetic variants correlated with facial measurements Signup and view all the answers

What aspect of an individual's traits accounted for the most variation in facial appearance according to the text?

Body mass index Signup and view all the answers