Mendel and the Pea Plant

Q.

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Q.

Mention the advantages of selecting pea plant for the experiment by Mendel?

Q.

Briefly explain the contributions of Mendel in genetics.

Q.

Mendel selected the pea plant for his experiments because:

A. It has a short life cycle

B. Possesses contrasting heritable characters

C. Self-fertilised and produces pure breeds

D. Cross-pollination produces fertile hybrids

1. A & B only

2. C & D only

3. B & C only

4. A, B, C & D

Q. A pea plant heterozygous for axial flowers is crossed with a pea plant bearing terminal flowers. Predict the phenotypes of the offspring produced as a result of this cross.

1. All the offspring will produce terminal flowers
2. Plants producing axial flowers and plants producing terminal flowers are obtained in the ratio of 1 : 1
3. All the offspring will produce axial flowers
4. All the offspring produced display dominant phenotype only

Q.

Which among the following are reasons for Mendel's success?

1. He applied statistical analysis and mathematical logic to problems in biology.

2. His experiments had a large sampling size.

3. He conducted experiments on successive generations of his test plants to confirm his inferences.

4. All of these.

Q. Which of the following is not a correct dominant-recessive trait pair of Pisum sativum?

Q.

A tall violet flowered plant (TTVV) is crossed with a dwarf white flowered plant (ttvv). When the $F_1$ plants are self pollinated, a total of 1600 $F_2$ plants are produced. Among them, how many plants are tall with white flowers?

1. 100

2. 900

3. 600

4. 300

Q.

Mention the advantages of selecting pea plant for experiment by Mendel.

Q. In a Mendelian cross, the characters appearing in first generation are

1. recessive
2. dominant
3. co-dominant
4. intermittent

Q.

The title of the paper published by Mendel in 1856 was "Experiments in plant hybridization".

1. True

2. False

Q.

Mendel conducted experiments on ___.

1. Sweet Pea

2. Wild Pea

3. Pigeon Pea

4. Garden Pea

Q.

In the fruit fly, red eye colour is ____ white eye colour.

Q.

Name any three contrasting characters noticed by Mendel in the garden pea plants.

Q.

Mendels concept of segregation implies that the two members of an allelic pair of genes:

1. are distributed to separate gametes

2. may contaminate one another

3. are segregated in pairs

4. are linked

Q. Gibberellins do not cause

1. induction of a-amylase in barley
2. shortening of genetically tall plants
3. stimulation of seed germination
4. promotion of parthenocarpy

Q.

If any inheritable mutation is observed in a population at high frequency, it is referred to as

1. DNA polymorphism

2. Expressed sequence Tag

3. Sequence annotation

4. Linkage

Q. Fruit shape in summer squash shows duplicate genes with cummulative effect . Is long shape of summer squash recessiverecessive or dominant ?

Q. Match the organisms in column I with their respective linkage group in column II.
Column-I Column-II

Organism	Linkage group
A. Maize	P. 4
B. Pea	Q. 10
C. Mucor	R. 7
D. Fruit fly	S. 2

1. A-R, B-S, C-P, D-Q
2. A-S, B-R, C-Q, D-P
3. A-Q, B-R, C-P, D-S
4. A-Q, B-R, C-S, D-P

Q. Mendel selected pea plant for his experiments because it has

1. Short cycle
2. Large number of offsprings
3. Sexual reproduction
4. All of the above

Q. Number of characters studied in garden pea by Mendel were

1. Seven
2. Five
3. Three
4. Six

Q. Mendel conducted hybridisation experiments on garden peas for

1. 5 years
2. 6 years
3. 7 years
4. 4 years

Q. Which one of the following characters is not encoded by chromosome 4 of a pea plant?

1. Stem height
2. Seed color
3. Pod shape
4. Flower position

Q. Who is regarded as Father of genetics?

1. T.H. Morgan
2. G.J. Mendel
3. Hugo de Vries
4. Karl Correns

Q.

Which of the law was discovered first by Mendel:

1. Law of dominance

2. Law of segregation

3. Law of independent assortment

4. Law of sex determination

Q. What is mendels law of inheritance also known as?

Q. Mendel selected the garden pea plants for his experiments. Explain.

Q. Gregor Mendel conducted hybridisation experiments on garden pea plants during the period ______.

1. 1870 - 1877
2. 1840 - 1850
3. 1856 - 1863
4. 1857 - 1869

Q. In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).

(i) What is the phenotype and genotype of the $F_1$-generation if a plant bearing pure axial flowers is crossed with a plant bearing pure terminal flowers?

Q.

Mendel conducted experiments on ___.

1. Sweet Pea

2. Wild Pea

3. Pigeon Pea

4. Garden Pea