================================================== BIO 240 The Inheritance of Color Blindness Worksheet
Which of the following characteristics would help any nonnative species , regardless of its place in the food chain , become invasive ? Select all that apply .
================================================== BIO 240 The Inheritance of Color Blindness Worksheet
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What percentage of Couple 1 ’ s male offspring will be color blind ? What percentage of their female offspring will be color blind ? Couple 2 comes into your office . The husband is color blind ; the wife is homozygous for the normal vision allele . Couple 3 comes into your office . The husband is color blind ; the wife is heterozygous for the color-blindness allele . Review the results you obtained for the female offspring of the three couples . Based on your results for the female offspring , predict whether color blindness is a dominant or recessive trait . Explain your reasoning . Complete the Punnett squares below to determine the possible
genotypes of each couple ’ s male and female offspring . ( X represents the normal color vision allele . X represents the color-blindness allele . Y represents the Y chromosome , which does not carry the colorvision gene .) Review the results you obtained from the lab for the female offspring of all three couples . Then , look at the female offspring ( the offspring with two X chromosomes ) in your three Punnett squares . What genotype must a female child have in order to be color blind ? Explain why color blindness occurs more commonly in males than females .