Law of Segregation

Q.

Based on observations in monohybrid cross, Mendel postulated which of the following laws?

1. Law of dominance

2. Law of segregation

3. Both a & b

4. Law of independent assortment

Q.

Based on observations in monohybrid cross, Mendel postulated which of the following laws?

1. Law of dominance

2. Law of segregation

3. Both a & b

4. Law of independent assortment

Q.

Mendel’s first law is also known as the law of segregation.

1. True

2. False

Q.

A trait in an offspring of sexually reproducing organisms is influenced by:

1. DNA of only male gamete
2. DNA of only female gamete
3. Both male and female gametes
4. Neither male nor female gamete

Q. In Snapdragon, a cross between true-breeding red flowered (RR) plants and true breeding white flowered (rr) plants showed a progeny of plants with all pink flowers. (a) The appearance of pink flowers is not known as blending. Why? (b) what is this phenomenon known as.

Q. According to Mendel's law of segregation, the segregation of the alleles takes place. This segregation occurs during

1. Pollination
2. Embryonic development
3. Seed formation
4. Gamete formation

Q. If two parents have the genotypes AA x aa, the probability of having an aa genotype in the F${}_1$ generation is

1. 25 percent
2. 50 percent
3. 75 percent
4. None of the above

Q. Mendel worked in

1. 17${}^{th}$ century
2. 18${}^{th}$ century
3. 19${}^{th}$ century
4. 20${}^{th}$ century

Q.

Based on observations in monohybrid cross, Mendel postulated which of the following laws?

1. Law of independent assortment

2. Both a & b

3. Law of segregation

4. Law of dominance

Q. If dominant C and P genes are essential for the development of purple color in Lathyrus odaratus flowers, what would be the ratio of purple and white color in a cross between CcPp x ccPp

1. 3:5
2. 9:7
3. 2:6
4. 4:4

Q.

Segregation of hereditary factors occurs during ___.

1. Crossing over

2. Mitosis

3. Gametogenesis

4. fertilization

Q. Which of the following will be most suitable for determining linkage result?

1. AAbb X AaBB
2. AaBb X AaBb
3. AABB X aabb
4. aaBB X aabb

Q. A double heterozygous tall plant with yellow colour (colour of cotyledon) is selfed, the ratio of dwarf plants with green cotyledon is

1. $\frac{1}{16}$
2. $\frac{1}{4}$
3. $\frac{1}{6}$
4. $\frac{2}{16}$

Q. RR(red) is crossed with rr (white). All Rr offsprings are pink. This indicates that R gene is

1. Hybrid
2. Incompletely dominant
3. Recessive
4. Mutant

Q. What is the theory of particulate inheritance?

Q. Explain the Law of Segregation.

Q. The two versions of a trait (character) which are brought in by the male and female gametes are situated on :
(a) copies of the same chromosome
(b) sex chromosomes
(c) two different chromosomes
(d) any chromosomes