plete dominance is a situation in which a heterozygous genotype produces a pheno
ID: 261457 • Letter: P
Question
plete dominance is a situation in which a heterozygous genotype produces a phenotyne that is intermediate between two tremes. 1. Among Caucasians, straight or curly hair, are the two extremes and wavy is the intermediate phenotyp a) If two people with wavy hair have children, show what all the possible genotypes of the c could be using a Punnett square. b) Then state the phenotype ratio of the children. Use H' for curly, for straight and H HS for wavy Human blood type is a codominant trait where more than 2 allele types are present in the population (ABO). Itr a person receives alleles for A or B they will be expressed (if both are received they will have the blood type AB). Type O is a recessive blood type when neither A or B is received. If a person receives an O allele along with an A or B allele they will have the blood type A or B. Use I for A blood. I for B and ii for O blood. 1. If a heterozygous man with type B blood mates with a woman with type O blood, what are their genotypes and what are the possible genotypes and phenotypes of their offspring. (Can you fully determine all of the genotypes?) who the parents are for a given child? Give an example where blood 2. How can blood type help deter type would determine the father of a child mineExplanation / Answer
(1)
Answer:
Parents
HcHs x HcHs
Hc
Hs
Hc
HcHc
HcHs
Hs
HcHs
HsHs
25% are curly haired
50% are wavy haired
25% are straight haired
(2)
IBi x ii
=IBi, IBi, ii, ii
50% will be B blood type and 50% O blood type
Hc
Hs
Hc
HcHc
HcHs
Hs
HcHs
HsHs
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