Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance
b. Co-dominance
c. Multiple allele
d. Incomplete dominance
e. Polygenic inheritance
b, c and e
a, b and c
a, c and e
b, d and e
B.
a, b and c
IAIO, IBIO - Dominant–recessive relationship
IAIB - Codominance
IA, IB & IO - 3- different allelic forms of a gene(multiple allelism)
The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?
3 genotypes ; 3 phenotypes
3 genotypes ; 4 phenotypes
4 genotypes ; 3 phenotypes
4 genotypes ; 3 phenotypes
C.
4 genotypes ; 3 phenotypes
A disease caused by an autosomal primary non-disjunction is
Down's syndrome
Klinefelter's syndrome
Turner's syndrome
Turner's syndrome
A.
Down's syndrome
Down’s syndrome is caused by non-disjunction of 21st chromosome
Among the following characters, which one was not considered by Mendel in his experiments on pea?
Stem – Tall or Dwarf
Trichomes – Glandular or non-glandular
Seed – Green or Yellow
Seed – Green or Yellow
B.
Trichomes – Glandular or non-glandular
During his experiments Mendel studied seven characters. Nature of trichomes i.e., glandular or non-glandular was not considered by Mendel.
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