The genes which are involved in alpha Thalassemia are---- and ----- while in beta thalassemia are----.

(1) HBA1, HBB, HBA2

(2) HBB1 HBB2 HBA

(3) HBB1 HBA HBB2

(4) HBA1 HBA2 HBB

Find the correct match-

1. Alpha Thalassemia- 11^th chromosome
2. Beta chromosome- 16^th chromosome’
3. Alpha Thalassemia- linked genes
4. Thalassemia- Qualitative trait

If Ram has a brother Shyam suffering from Cystic Fibrosis, what is the probability of Ram being a carrier as his parents are normal?

a.1/4

b. ½

c.2/3

d.3/4

Which of the four couples claiming the baby O positive blood type are possible biological parents of it?

a. B- and O-

b. O+ and AB+

c. AB+ and AB-

d.A+ and O-

If two people who are carrier for a genetically inherited fatal recessive disease decide to marry and disease cause still birth. What is the probability of the live children to be a carrier?

a.1/2

b.2/3

c.1/4

d.1/3

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.

Assertion   :       In honey bee, life history shows natural and complete parthenogenesis.

Reason      :       In honey bee, both drones and workers are parthenogenetically developed.

A plant, on repeated self pollination, preserves the trait expressed for many generations. Such a plant is said to be:

The F1 progeny in monohybrid crosses by Mendel resembled:

In a true breeding the allelic pair of genes are

1. Homologous
2. Linked
3. Stable
4. Homozygous