Question 1 Question Completion Stotus: 1. Two parents, both of whom are heterozy

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Question 1 Question Completion Stotus: 1. Two parents, both of whom are heterozygous nor tne recessive auere that causes cystic rbrosis are plataning to have rour cravaren. For which ofthe folowing questions would you use the formula Pant psat slt C what is the probability of the first three children being normal and the fourth one having cystic fibrosis? what is the probability of three of the four children being normal and one child having the disease? what is the probability of all four children being normal? d.Dond b C b and c 1 points Question 2 In a family offiwe children, what is the probablity that three of them wilbe girls and two of them will be boys? a, 5/18 b, 1/32 d, 9128 1 points Question 3 What is the probability of a couple having four children, all of the same sex? C d. 1.10 1 points Save Answer Question 4 A black cat is crossed to a white cat. Among the offspring, of them are black, and of them are white. When the black kittens are interbred all the kittens (and there are alot!) that they produce are black. TF: On the basis of these results, the white allele is recessive. False 1 points Question 5 In sheep, thick fleece results from an allele CT) that is dominant over an allele for thin fleece (t). A sheep with thick fleece is crossed to a sheep with thin fleece. A single lamb, with thin fleece, results from the cross. Based on this single lamb, is it possible determine the genotypes ofthe two parents? If what are their genotypes? so, a. not poisible to say

Explanation / Answer

question 1 ;

option f ; b and c what is the probability of all children being normal ? what is the probality of three out of 4 children normal and one child having disease

question 2;

option B ,1/32 , the probablity of having children 3 girls followed by the 2 boys

question 3;

option a ; 1/2 will have same sex out of 4 children ,0.5 to the power of N ,where N is equal to he number of kids .

question 4;

true , white allele is recessive

question 5;

option B , TT * tt genotype of the parents

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