Mendel's Experiments

Q. A/An is an alternative form of a gene. Organisms typically have alleles for a single trait.

1. allele
2. one
3. two
4. three
5. DNA
6. chromosome

Q.

In his classic experiments on pea plants, Mendel did not use :

1. Flower position

2. Seed colour

3. Pod length

4. Seed shape

Q.

Mendelian recombinations are due to________

1. Linkage of genes

2. Independent assortment of genes

3. Dominance of genes

4. None of these

Q. When Mendel crossed a pure tall pea plant with a pure dwarf pea plant, _______ was obtained in the F1 generation.

1. TT
2. tt
3. Tt
4. PT

Q.

Select the incorrect option:

Mendel used the garden pea plant for his hybridization experiment because:

1. It is easy to grow
2. It has easily distinguishable and inheritable characters
3. It has a very long life span
4. It is easily self pollinated

Q.

In a breeding experiment, a pea plant producing yellow seeds is crossed with a green-seeded pea plant. All the $F_1$ plants are yellow-seeded. If these $F_1$ plants are crossed with the green-seeded parent plant, the progeny consists of

1. All yellow seeded plants

2. Yellow seeded and green seeded plants in 3:1 ratio

3. All green seeded plants

4. Yellow seeded and green seeded plants in 1:1 ratio

Q. Mutation may occur due to the defects in the duplication of_______.

1. mRNA
2. rRNA
3. DNA
4. phosphate molecule

Q.

In pea plants, round seed is dominant over wrinkled seed. A plant with different alleles for round seeds was crossed with a plant with same alleles of wrinkled seeds. Which of the following can be the expected result?

1. 301 round and 100 wrinkled

2. 305 round and 301 wrinkled

3. 200 round and 100 wrinkled

4. 99 round and 300 wrinkled

Q.

How many types of gametes are produced by the parents of Mendel’s monohybrid $F_2$ progeny?

1. One

2. Three

3. Two

4. Four

Q.

In a plant, the red colour of the flower is dominant over white. A cross was made between a plant containing red flower and other with white flower. The cross yielded 50% white-flowered plant and 50% red flowered plant. The trait of the parent with the red flower has:

1. Homozygous

2. Heterozygous

3. Cannot be determined

4. Can be homozygous or heterozygous