Biology, 25.11.2021 06:00 skylarschumacher7
Colorblindness is a sex-linked recessive trait. In the first generation, a normal male marries a heterozygous female. The couple has three girls, Karen, Doja, and Megan. Each girl marries. Karen has five children: three girls and two boys. Doja has two children: a boy and a girl. Megan has four children, all girls. One of Karen’s sons is colorblind and one of her daughters is colorblind. What does this tell us about Karen’s genotype? What is her husband’s genotype? If Doja married a normal male, what is the chance that her son is colorblind? (You may need to scratch out a pedigree and/or Punnet Square to help you answer the question.)
Answers: 2
Biology, 21.06.2019 20:00, jjxt126
Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution
Answers: 2
Biology, 22.06.2019 15:50, nuconteaza119
Which individual below would be considered heterozygous? a. dd b. dd c. dd
Answers: 2
Colorblindness is a sex-linked recessive trait. In the first generation, a normal male marries a het...
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