Question

Marriages between close relatives and cousins is not advisable because [NCERT 1976; MP PMT 1990]
A) More mutations can occur
B) More recessive defects are likely to appear
C) More chances are there for Rh blood group anomalies
D) More chances are there for multiple births

Answer 1

hey hi...

the correct answer is option B.

>>Marriages between close relatives and cousins is not advisable because recessive lethals are carried in heterozygous conditions and express themselves only when mating takes place between two carrier individuals or close relatives.

hope this helps....

Answer 2

heya,

your answer..


B) More recessive defects are likely to appear..

hope it is helpful