How sickle cell anaemia is different from Thalassemia?

(1) Being autosomal recessive

(2) Being a blood disease

(3) Being a qualitative disorder

(4) Involvement of mutation

The distance between gene A, B, C and D on a chromosome is as follows:

A and C - 18 units

A and B - 26 units

A and D - 40 units

B and C - 8 units

B and D – 14 units

The sequence of these genes would be-

1. ABCD
2. ACBD
3. ADCB
4. ACDB

Read the following statements with respect to Thalassemia and find the wrong one.

1. Quantitative disorder
2. Different forms of Thalassemia are observed
3. Anaemia is not a characteristic feature of this disease
4. Defect due to mutation and deletion

If dihybrid mulatto male (AaBb) is crossed with white female(aabb), then the ratio of mulatto and white offspring will be-

1. 1:6
2. 1:1
3. 4:1
4. 2:1

Which of the following are correct with respect to Thalassemia?

1. An autosomal dominant disorder
2. Defect due to mutation or deletion
3. Parents will be homozygous for thalassemia
4. Occurs due to vitamin deficiency

Which of the following is an autosomal recessive blood disease?

1. Phenylketonuria
2. Thalassemia
3. Haemophilia
4. Muscular dystrophy

What phenotypic ratio will be there when selfing of a trihybrid is performed in which two gene pairs are completely dominant and one gene pair is codominant?

1. 3:9:1:2:1:3
2. 27:9:3:1:3:3:1
3. 9:3:3:1:18:6:6:2:9:3:3:1
4. 18:6:6:2:1:2:1:2:1

If a character is controlled by 5 alleles, what will be the number of genotype in this case?

1. 12
2. 18
3. 30
4. 15

In a test cross of F1 generation, having a genotype AaBb, following progeny were obtained

AaBb- 450

aabb – 450

Aabb- 50

aaBb- 50

How far in centimorgans are the a and b genes?

a.100

b.90

c.10

d.1