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Chapter 3 Genetics and Heredity

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Across
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Two genetic endowment inherited by an individual
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Siblings who share the same womb at the same time but originate from two different eggs fertilized by two different sperm cells
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Tests performed on a women's blood to determine whether the fetus she is carrying has an increased risk for some types of chromosomal and metabolic disorders
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Children seek out environmental compatibility with their gametes
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Method of sampling fetal chorionic cells
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Gamete cell division (23 chromosomes)
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Two individuals who originate from a single zygote, which early in cell division separates to form two separate masses
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Proportion of variability in the phenotype that is estimated to be accounted for by genetic influences within a known environmental range
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Parents transmit traits through genes, environment, or both
Down
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Stable, early-appearing constellation of individual personality attributes believed to have a hereditary basis
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More than one gene affecting the trait
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Procedures designed to provide unequivocal answers about the presence or absence of a prenatal problem
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Method of withdrawing blood from the umbilical cord of the fetus
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Study of how characteristics and behaviors of individuals, such as intelligence and personality, are influenced by the interaction between genotypes and experiences
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Method of sampling the fluid surrounding the developing fetus through insertion of a needle
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Normal cell division