BIOLOGY
JAMB 2011 - Question 45
Biology 2011 JAMB Past Questions - Question 45: The crossing of individuals of the same species with different genetic characters is
Choose the most appropriate option for the gap .
A:
B:
C:
D:
Correct Answer
C
Explanation
Non disjunction is the inability of a pairof chromosomes to separate during the formation of gametes (spermatozoa andeggs). This results in,a. Onegamete having both members of the given chromosOitiepair.b. Theother gamete not having any member of the chromosome pair.Polygenic inheritance is the inheritanceof a character, the expression of which is controlled by many genes that arelocated at different loci (positions) on the chromosome. This differs or 48. deviatesfrom the usual Mendelian law that states that a character is controlled by apairof genes.
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