Monohybrid Cross 1

F₂ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1: 2: 1. It represents a case of:

1. Co-dominance

2. Dihybrid crosses

3. Monohybrid crosses with complete dominance

4. Monohybrid crosses with incomplete dominance

A true-breeding plant is:

1.	one that is able to breed on its own
2.	produced due to cross-pollination among unrelated plants
3.	near homozygous and produces offspring of its own kind
4.	always homozygous recessive in its genetic constitution

The genotypes of a husband and wife are I^AI^B and I^Ai respectively. Among the blood types of their children, how many different genotypes and phenotypes are possible?

1. 3 genotypes; 4 phenotypes

2. 4 genotypes; 3 phenotypes

3. 4 genotypes; 4 phenotypes

4. 3 genotypes; 3 phenotypes

Select the correct statement:
1. Franklin Stahl coined the term "linkage".
2. Punnett square was developed by a British scientist.
3. Spliceosomes take part in translation.
4. Transduction was discovered by S. Altman.

Which of the following pairs is wrongly matched?
1. Starch synthesis in pea: Multiple alleles
2. ABO blood grouping: Co-dominance
3. XO type sex determination: Grasshopper
4. T.H Morgan: Linkage

Which of the following characteristics represent the 'Inheritance of blood groups' in humans?

a. Dominance

b. Co-dominance

c. Multiple allelism

d. Incomplete dominance

e. Polygenic inheritance

1.	b, c, and e	2.	a, b and c
3.	b, d, and e	4.	a, c, and e

The production of gametes by the parents, formation of zygotes, the F₁ and F₂ plants, can be understood from a diagram called:

1. Punnett square

2. Net square

3. Bullet square

4. Punch square

Match List-I and List-II:

	List-I		List-II
A.	Two or more alternative forms of a gene	I.	Back Cross
B.	Cross of F1 progeny with homozygous recessive parent	II.	Ploidy
C.	Cross of F1 progeny with any of the parents	III.	Allele
D.	Number of chromosome sets in plant	IV.	Test cross

Choose the correct answer from the options given below:

1.	A-II, B-I, C-III, D-IV	2.	A-III, B-IV, C-I, D-II
3.	A-IV, B-III, C-II, D-I	4.	A-I, B-II, C-III, D-IV

Which one of the following can be explained as the basis of Mendel's Law of dominance?

A:	Out of one pair of factors, one is dominant and the other is recessive.
B:	Alleles do not show any expression and both the characters appear as such in F2 generation.
C:	Factors occur in pairs in normal diploid plants.
D:	The discrete unit controlling a particular character is called factor.
E:	The expression of only one of the parental characters is found in a monohybrid cross.

Choose the correct answer from the options given below:

1.	A, C, D and E only	2.	B, C and D only
3.	A, B, C, D and E	4.	A, B and C only