Worksheetsprinciples of inheritance & variation- Quiz 4
Total questions: 10
Worksheet time: 4mins
An allele is dominant, if it is expressed in –
second generation
homozygous combination
heterozygous combination
both homozygous and heterozygous conditions
In Mendel’s experiments the alleles were
codominant
corecessive
dominant-recessive
incompletely dominant
In a dihybrid cross between two heterozygotes AaBb x AaBb, if we get 3 : 1 ratio among the offsprings, the reason for this may be
polygenes
linked genes
pleiotropic genes
hypostatic genes.
Trisomy has a chromosome complement of –
2n – 1
2n + 2
2n + 3
2n + 1
Which of the following genes have similar genotypic effect when present separately but produce different trait after interacting together and give a ratio of 9 : 7 in F2 generation?
Complementary genes
Jumping genes
Duplicate genes
House-keeping genes
Which one of the following is the genotypic ratio in monohybrid cross?
9 : 3 : 3 : 1
1 : 2 : 1
9 : 7
3 : 1
The combined form of coupling and repulsion is –
crossing over
mutation
linkage
disjunction
The phenotypic and genotypic ratios remain same in F2 generation in case of
dihybrid cross
supplementary genes
incomplete dominance
inhibitory genes
Column A --------------------------Column B
I. Test cross -------------------------A. 9 : 3 : 3 : 1
II. Monohybrid ratio -------B. Tt x tt
III.Back cross ------------------C. Tt x TT
IV. Dihybrid ratio -----------D. 3 : 1
The correct match is –
I - B, II - C, III - A, IV - D
I - C, II - D, III - A, IV - B
I - B, II - D, III - C, IV - A
I - B, II - D, III - A, IV - C
Column A ------------------- Column B
I. Removal of anther ------------------A. Human blood group
II. Laws of inheritance --------------------B. Emasculation
III.Multiple allelism -----------------------C. Blood group O
IV. Universal donor -------------------D. Mendel
The correct match is –
I - B, II - D, III - A, IV - C
I - C, II - D, III - A, IV - B
I - B, II - D, III - C, IV - A
I - B, II - A, III - D, IV - C
