Exam 3: Genes, Environment, and Development

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Diana and Phillip are in their late 20s. They are also Jewish and of Eastern European ancestry. They seek genetic counseling before they attempt to become pregnant. They are most likely concerned about the possibility of their child having

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How many of the following (your height, your hair color, your way of thinking, your sex chromosomes) represent a phenotype?

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If shared environmental influences alone contribute to the expression of a trait, which of the following patterns of correlations would be observed?

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Howdy has inherited a recessive gene that causes freckles and a dominant gene that prevents freckle formation. Despite this fact, Howdy's genetic makeup results in him having a few freckles. Howdy's freckles are best explained by the process of _____ dominance.

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An individual with Turner's syndrome has one X chromosome and no Y chromosome.

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If a physician wanted to get a visual image of a developing fetus' limbs, her best option would be to use a(n)

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The fact that type AB blood appears to be the result of a compromise between genes for type A and type B blood provides a good example of

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Scientists estimate that the average human cell contains about _____ genes.

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Meg was born with only one X chromosome. She is short, of average verbal intelligence, and lacking in spatial reasoning skills. Meg has

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A polygenetic effect is due to the actions of a single pair of genes.

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Which one of the following sets of data would show a strong genetic influence on the development of a trait?

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What makes Huntington's disease an unusual genetic disorder?

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During a _____ genetic diagnosis, the first cells from a fertilized egg are examined for genetic defects.

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Concerning twins, monozygotic is to dizygotic as

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Which statement is true?

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The process by which a zygote initially becomes a multiple-celled organism is called _____.

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The heritability of IQ scores appears to increase between infancy and adulthood.

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Which statement concerning schizophrenia is FALSE?

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When looking at Fluffy the cat's family tree, Kitka notices that over several generations, owners have deliberately cultivated the characteristic of extremely black fur. This appears to have been accomplished by careful mating combinations in a process called

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Which of the following is NOT a major claim of Darwin's theory of evolution?

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