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BIO1041. Spring 2015 Dr. Robinson The figure on the right depicts a pedigree fra

ID: 38999 • Letter: B

Question

BIO1041. Spring 2015 Dr. Robinson The figure on the right depicts a pedigree fransay, circles are females Filled Use this info to answer the individuals express a certain trait tombie-eyes, symbols A following questions When answering the ques ase the and a to represent the domitant and recessive alleles, respectively 8, Is this trait dominant, recessive or is it impossible to telih 9. On the lines next to each symbol, label the GENOTYPE For each trait (each c answer is worth Mpt,this question worth 6 pts max), 10,1f the couple labeled with the asterisks were to have another child, what is the probability that din child would express zombie-eye? impossible to tell, then answer that. 1. Why are genetic diseases more common as recessive traits than dominant uaits? Consider natural selection. in why Huntington Disease which both dominant and frial has not yet been removed from the human populatio BONUS

Explanation / Answer

8. This is dominant trait

9. 1st generation

male Aa Female Bb

2nd generation

male Ab, AB, Females ab, AB

3rd generation

Male AB

10. Probability of the child to get zombie eyes is 90%

11. In recessive condition, a gene alteration is present in both copies of a particular gene to cause sufficient impairment to cell function to cause disease.