Respuesta :
6. The man is the father of the child with O blood group since it does not contribute O allele to the child and mother have BO alleles. The child will receive one O from mother since O is recessive allele it will be expressed in homozygous condition which is not possible with this cross.
7 The phenotype is half palamino and half cremello horses are produced . The genotype is HcHcr : HcrHcr (1:1 ratio)
Explanation:
Data given:
blood group of man = AB (genotype is AB)
blood Group of woman = B (genotype can be BB or BO
Child is O type = why
The cross shows
A B
B AB AB
O A0 BO
it is known that each parent contributes one of the alleles to their child in ABO blood system.
The father with AB group is able to pass either A or B allele to the child
Mother with BO could either pass B or O allele to the child. But since 0 is the recessive trait both parents must pass on O allele for the child to be O blood type.
Hence man with AB is not the biological father of the child.
7. data given:
Coat colour in horses depict phenomenon of codominance.
chestnut colour is Hc
cremello colour horse genotype = HcrHcr
plamino colour Hc Hcr
cross shows:
Hcr Hcr
Hc HcHcr HcHcr 2:2 cremello:plamino
Hcr HcrHcr HcrHcr genotype = 1:1 ratio
HcHcr : HcrHcr
