Assertion : Phenylketonuria is a recessive hereditary disease caused by the body’s failure to oxidize an amino acid phenylalanine to tyrosine, because of a defective enzyme.

Reason : It results in the presence of phenylalanine acid in the urine.

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

(1) Panmictic

(2) Homologous

(3) Apomictic                                                

(4) Pure line

1. The parent exhibiting dominant trait completely

2. The parent exhibiting recessive trait completely

3. The parent exhibiting dominant trait partly

4. The parent exhibiting recessive trait partly

(1) Fitness of an organism

(2) Genotype of a plant expressing dominant phenotype

(3) The suitable parents for a Mendelian Cross

(4) The hidden genotypic ratio of F2 phenotypes

(1) 2 : 1

(2) 3 : 1

(3) 1: 2 : 1                

(4) 1 : 1

1. Complete dominance

2. Incomplete dominance

3. Co-dominance

4. Lethality

1. Produces no product

2. Produces a different product

3. Produces half the product

4. Produces no product or a non-functional product