Recessive traits

Q.

Is straight thumb is dominant or recessive?

Q.

In his experiments Mendel crossed tall pea plants with dwarf pea plants. The pea plants produced in F₁ generation were:

1. all of them were dwarf

2. all of them were of medium height plants

3. both tall and dwarf

4. all of them were tall

Q.

How do Mendel’s experiments show that traits may be dominant or recessive?

Q.

Choose the correct option-

Alleles are-

1. heterozygotes

2. different forms of a gene

3. true-breeding homozygotes

4. different phenotype

Q.

What are the two types of alleles?

Q.

If heterozygous parents are crossed, which of the following trait/s will have more frequency in the F1 generation?

1. recessive character

2. dominant character

3. co-dominant character

4. Polygenic character

Q.

In the Mendelian convention, the usage of capital letters is to indicate ______ alleles and lower-case letters is to indicate _____ alleles.

1. Recessive, dominant

2. Dominant, recessive

3. Heterozygous, homozygous

4. Homozygous , heterozygous

Q.

The traits which are expressed in an individual in every condition are the recessive traits.

1. False

2. True

Q.

In a pair of contrasting traits, expressing traits and not expressing traits in the progeny are called as _____ and _____ respectively.

1. recessive ; genotypic

2. phenotypic ; genotypic

3. recessive ; dominant

4. dominant ; recessive