What could be the genotype of a garden pea plant that expresses tall trait of height?

1. TD

2. Tt

3. Td

4. tt

A genetic cross between homozygous individuals but with different alleles for a single gene of interest is called as:
1. A reciprocal cross
2. Monohybrid cross
3. Dihybrid cross
4. Test cross

A graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross is called as:
1. Forked line diagram
2. Punnett square
3. Pedigree chart
4. Idiogram

The F2 genotypic ratio of a monohybrid cross is:
1. 1 : 1
2. 3 : 1
3. 1 : 2 : 1
3. 9 : 7

In a test cross, the plant expressing the dominant phenotype is crossed with the plant:
1. Which is heterozygous dominant
2. Which is heterozygous recessive
3. Which is homozygous recessive
4. Which is homozygous dominant

Which of the following is not true for the Law of Dominance given by Mendel?
1. Characters are controlled by discrete units called factors.
2. Factors occur in pairs.
3. In a dissimilar pair of factors one member of the pair dominates the other.
4. The alleles show blending at the time of fertilization

What is the F2 genotypic ratio in cases of incomplete dominance?
1. 1 : 1
2. 3 : 1
3. 1 : 2 : 1
4. 1 : 1

Blood group antigens are:
1. Carbohydrates present in plasma
2. Carbohydrates present on the surface of RBCs
3. Plasma proteins
4. Proteins present on the surface of RBCs

What can be the blood groups of progeny whose father and mother are of AB and O blood group respectively?
1. A and B only
2. AB only
3. All except O
4. A, B, AB and O

“Chromosomes, which are seen in all dividing cells and pass from one generation to the next, are the basis for all genetic inheritance”.
This statement is credited to:
1. Watson and Crick
2. Hershey and Chase
3. Sutton and Boveri
4. Meselson and Stahl