Gene

Q. When a genotype consists of a dominant and a recessive allele for a trait, the phenotype expressed will be .

1. dominant
2. recessive
3. new
4. incomplete

Q. Choose the correct option.

1. Alternative forms of genes which occupy the same position on chromosome.
A. Alleles
B. DNA

2. The trait that is not expressed is called recessive trait.
A. True
B. False

3. Which of these is not a dominant trait?
A. Blue eyes
B. Dimples

Q. Genes are made up of repeating units of chromosomes.

1. False
2. True

Q. Assertion [A]: Genes are the segments of DNA molecule.

Reason [R]: Genes carry information for protein synthesis.

1. [A] is true and [R] is false
2. [R] is true and [A] is false
3. Both [A] and [R] are true and [R] is the correct explanation for [A]
4. Both [A] and [R] are true but [R] is not the correct explanation for [A]

Q. The branch of biology that deals with heredity and inheritance of characters is called _________.

1. genetics
2. mutation
3. evolution
4. taxonomy

Q. Monogenic and chromosomal disorders are genetic disorders.

1. True
2. False

Q. refers to the pair of genes responsible for the visible characteristics in individuals.

Q. Select the statements that are true for genes.

i. Genes are specific sequences of nucleotides in a DNA molecule.
ii. A gene does not store information for protein synthesis.
iii. In individuals of a given species, a specific gene is located on a particular chromosome.
iv. Each chromosome has only one gene.
v. Genome identification is the basis of DNA fingerprinting.

1. i, ii and iii
2. i, iii and v
3. i, iii and iv
4. ii, iv and v

Q. Genes are the functional segments of DNA.

1. True
2. False

Q. Alleles are alternate forms of different genes.

1. False
2. True