Laws of Mendel

Q. Statement 1: Every individual organism contains two or more alleles for each trait.
Statement 2: Alleles segregate (separate) during meiosis such that each gamete gets only one of the alleles.

Which of the given statements is correct?

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

Q. Which of the following options correctly predicts all the types of gametes that can be formed from the genotype TtYy (heterozygous tall plant and heterozygous yellow seed color plant)?

1. Tt and Yy
2. TY and ty
3. TY, Ty, tY and ty
4. Ty and TY

Q. The law of independent assortment states that:

1. Phenotype is independent of genotype.
2. Alleles for separate traits are passed independent of one another
3. Dominant allele is independent of the phenotype
4. None of these

Q.

Mendel’s hybridization strategy was using two plants_________

1. differing in growth patterns

2. differing in contrasting characters

3. similar in two different characters

4. similar in many characters

Q.

Emasculation of pea plants helped Mendel to _________.

1. successfully conduct self-pollination

2. preserve and produce pure lines

3. prevent self-fertilization

4. enhance self-fertilization

Q.

Why did Mendel choose peas for his experiments?

1. Pea plants have more contrasting characters

2. Pea plants produce more variations

3. Pea plants can be grown easily and pollinated easily

4. All of the above

Q.

Emasculation in plant breeding is ________

1. removal of carpels to prevent self pollination

2. removal of anthers to prevent self pollination

3. removal of sepals to prevent cross pollination

4. removal of petals to prevent cross pollination

Q. Which one of the following was not the outcome of Mendel’s experiments?

1. Independent assortment
2. Factors reside in chromosomes
3. Segregation of factors
4. Dominant trait

Q. Which of the following is (are) not a character(s) selected by Mendel for crossing?
1. Flower shape
2. Pod colour
3. Pod shape
4. Branch length

1. 2 and 3
2. 1, 3 and 4
3. 1 and 4
4. 1 and 3

Q. What was the outcome when Mendel crossed a tall plant (TT) with a dwarf plant (tt)?

1. The offspring were a blend of the two characters
2. Only the recessive trait appeared in ${\text{F}}_1$
3. Both the traits appeared in equal numbers in ${\text{F}}_1$
4. Only the dominant trait appeared in ${\text{F}}_1$