Intro To Health Care
4th Edition
ISBN: 9781337338295
Author: Mitchell
Publisher: Cengage
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Why are you genitically distinct
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- Figure 17.8 Do you think Dolly was a Finn-Dorset or a Scottish Blackface sheep?arrow_forwardIn cladograms, sister groups are _______ . a. inbred b. the same age c. represented by nodes d. in the same familyarrow_forwardWhy do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?arrow_forward
- True or false? All traits are inherited in a Mendelian pattern.arrow_forwardAlleles are ___________. a. alternate forms of a gene b. different molecular forms of a chromosome c. always homozygous d. always heterozygousarrow_forwardMore Crosses with Pea Plants: The Principle of Independent Assortment Think about this one carefully. Albinism and hair color are governed by different genes. A recessively inherited form of albinism causes affected individuals to lack pigment in their skin, hair, and eyes. In hair color, red hair is inherited as a recessive trait and brown hair is inherited as a dominant trait relative to red hair. An albino woman whose parents both have red hair has two children with a man who is normally pigmented and has brown hair. The brown-haired partner has one parent who has red hair. The first child is normally pigmented and has brown hair. The second child is albino. a. What is the hair color (phenotype) of the albino parent? b. What is the genotype of the albino parent for hair color? c. What is the genotype of the brown-haired parent with respect to hair color? Skin pigmentation? d. What is the genotype of the first child with respect to hair color and skin pigmentation? e. What are the possible genotypes of the second child for hair color? What is the phenotype of the second child for hair color? Can you explain this?arrow_forward
- The phenotype of individuals heterozygous for ________ alleles comprises both homozygous phenotypes. a. epistatic b. codominant c. pleiotropic d. hybridarrow_forwardIn genetics, F stands for filial, which means ________. a. friendly c. final b. offspring d. hairlikearrow_forwardDo you think Frederick Williams experiment would have worked better if he had ordered brothersister marriages within tall families instead of just choosing the tallest individuals from throughout the country?arrow_forward
- Tay-Sachs disease is an autosomal recessive disease. Affected individuals do not often survive to reproductive age. Why has Tay-Sachs persisted in humans?arrow_forwardIn cats, the genotype AA produces tabby fur color; Aa is also a tabby, and aa is black. Another gene at a different locus is epistatic to the gene for fur color. When present in its dominant W form (WW or Ww), this gene blocks the formation of fur color and all the offspring are white; ww individuals develop normal fur color. What fur colors, and in what proportions, would you expect from the cross AaWw Aa Ww?arrow_forwardMonozygotic (MZ) twins have a concordance value of 44% for a specific trait, whereas dizygotic twins have a concordance value of less than 5% for the same trait. What could explain why the value for MZ twins is significantly less than 100%?arrow_forward
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