NCERT Class 12 Biology: Chapter –5 Principle of Inheritance and Variation Part 1
Get top class preparation for IMO-Level-2 right from your home: fully solved questions with step-by-step explanation- practice your way to success.
Multiple Choice Questions
Question 1:
All genes located on the same chromosome:
a. Form different groups depending upon their relative distance
b. Form one linkage group
c. Will not from any linkage groups
d. Form interactive groups that affect the phenotype
Answer: (b)
Question 2:
Conditions of a karyotype and are called:
a. Aneuploidy
b. Polyploidy
c. Allopolyploidy
d. Monosomy
Answer: (a)
Question 3:
Distance between the genes and percentage of recombination shows:
a. a direct relationship
b. an inverse relationship
c. a parallel relationship
d. no relationship
Answer: (b)
Question 4:
If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is:
a. Autosomal dominant
b. Autosomal recessive
c. Sex-linked dominant
d. Sex-linked recessive
Answer: (d)
Question 5:
In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?
a.
b.
c.
d.
Answer: (d)
Question 6:
Person having genotype would show the blood group as . This is because of:
a. Pleiotropy
b. Co-dominance
c. Segregation
d. Incomplete dominance
Answer: (b)
Question 7:
ZZ/ZW type of sex determination is seen in:
a. Platypus
b. Snails
c. Cockroach
d. Peacock
Answer: (d)
Question 8:
A Across between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?
a.
b.
c.
d.
Answer: (b)
Question 9:
In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that:
a. The allels of two genes are interacting with each other
b. It is a multigenic inheritance
c. It is a case of multiple allelism
d. The allels of two genes are segregating independently.
Answer: (d)