Genetics AFCAT Questions

AFCAT Biology

Genetics MCQ Questions


7.
What is the phenotypic ratio of a typical Mendelian dihybrid cross in F2 generation?
A.
9 : 3 : 3 : 1
B.
3 : 1
C.
1 : 2 : 1
D.
1 : 1 : 1 : 1
😑 View Answer Rough Work Error
ANSWER :
A. 9 : 3 : 3 : 1
8.
In a test cross, an organism showing dominant phenotype is crossed with:
A.
Another heterozygous individual
B.
Homozygous recessive individual
C.
Homozygous dominant individual
D.
An individual of the F2 generation
😑 View Answer Rough Work Error
ANSWER :
B. Homozygous recessive individual
9.
If a test cross produces offspring in 1 : 1 ratio of dominant to recessive phenotype, the parent in question must be:
A.
Homozygous dominant
B.
Homozygous recessive
C.
Heterozygous
D.
Sterile
😑 View Answer Rough Work Error
ANSWER :
C. Heterozygous
10.
Mendel's Law of Segregation is also known as the:
A.
Law of Independent Assortment
B.
Law of Purity of Gametes
C.
Law of Dominance
D.
Law of Polygenic Inheritance
😑 View Answer Rough Work Error
ANSWER :
B. Law of Purity of Gametes
11.
Mendel's Law of Independent Assortment is derived from which type of cross?
A.
Monohybrid cross
B.
Back cross
C.
Test cross
D.
Dihybrid cross
😑 View Answer Rough Work Error
ANSWER :
D. Dihybrid cross
12.
Which of the following laws of Mendel has been considered as the 'law without exceptions'?
A.
Law of Independent Assortment
B.
Law of Dominance
C.
Law of Segregation
D.
Law of Linkage
😑 View Answer Rough Work Error
ANSWER :
C. Law of Segregation