This activity is about dominant and recessive genes. Below are two examples, ple

Question

This activity is about dominant and recessive genes. Below are two examples, please write the four possible genetic combinations (genotypes) then explain what the physical outcome will be for each combination (phenotype). Assume that blond hair is dominant and designated by the genetic symbol “B” and red hair is recessive and designated by the genetic symbol “r.” Using the parents described below, map out the 4 possible genetic combinations for hair color that could be passed along to their children. Then describe the phenotypic hair color for each of the children.   DAD (B r) MOM (B r)

Assume that stuttering is caused by a recessive trait and designated by the genetic symbol “s” while its non-damaging genetic pair is designated by the letter “N.” Using the parents described below, map out the 4 possible genetic combinations for stuttering that could be passed along to their children. Then identify which child(ren) would have the disorder and which child(ren) would carry (but not express) the disorder.   DAD (s s) MOM (N N)

Explanation / Answer

Answer:

•

Genotype of parents are:. Dad( Br) and Mom(Br)

Cross between parents :. Dad(Br). × Mom(Br)

Hence , offsprings: BB(blond hair),BR(blond hair),Br(blond hair),rr(red hair)

• In second case:

Genotype of parents are:. Dad( ss) and Mom(NN)

Cross between parents :. Dad(ss). × Mom(NN)

Hence , offspring: sN(carrier but not affected),sN(carrier but not affected),sN(carrier but not affected),sN(carrier but not affected)

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.