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What is the probability of 2 heterozygous individuals producing a homozygous recessive offspring?
25%
What is the probability of each of the following sets of parents producing the give genotypes in their offspring?
Each parent contributes 50% of the genetic make-up of the offspring.
What is the probability of a down syndrome carrier male and a non-carrier female producing non-carrier children?
50%
What is the probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder?
75%. Explanation: if both parents are carriers than their Gametes would be Dd x Dd, resulting in DD (1/4), Dd (2/4), and dd(1/4), meaning that there is a 25% chance that they will have a child that has the disorder. DD = A normal child that lacks the recessive gene, therefore not a carrier Dd = A normal child that carries the recessive gene dd = A child with the disorder + carries the gene, hence the child's future offspring will carry it as well. Source: Self/Basic Punnet Square
What is the probability of a Down syndrome woman and a non-carrier male producing non-carrier children?
I am unsure of the answer to this question, but I feel the need to remove the previous ridiculous answer stating that "women with down syndrome are sterile." They ARE indeed fertile. I am in search of the same information, and will be editing this post once I find the correct answer.
