What does the given pedigree chart shows? 

(1) Sex-linked recessive trait

(2) Sex-linked dominant trait

(3) Inheritance of Sickle cell anaemia

(4) Inheritance of autosomal dominant trait

Which of the following statements are correct?

(i) Polyploidy is caused due to failure of cytokinesis after telophase.

(ii) polyploidy results into increase in number of autosomes

(iii) Turner’s syndrome is an example of polyploidy

(iv) polyploidy results into an increase in a whole set of chromosomes

(1) (i) and (ii)

(2) (i) and (iii)

(3) (ii) and (iii)

(4) (i) and (iv)

Sex determination in Honey bee depends upon-

(1) Number of sets of chromosomes present in parents

(2) Number of sets of chromosomes present in progenies

(3) Number of sets of genes present in parents

(4) Number of sets of genes present in progenies

What is wrong with respect to sex determination in honey bee?

(1) Unfertilized egg develops as a male by means of parthenogenesis.

(2) Union of sperm and egg develops as a female

(3) All workers and males will have 16 chromosomes while queen will have 32 chromosomes.

(4) Males produce sperms by mitosis.

What is the special characteristic feature of haplodiploid sex determination?

1. Males produce sperms by mitosis

2. Number of sets of chromosomes present in progenies will decide their sex

3. Workers will have diploid set of chromosomes.

4. Drones will have haploid set of chromosome.

If the offspring is aa, what possible combination of parental genotype would have produced these progenies?

(1) AA and aa

(2) Aa and AA

(3) aa and AA

(4) Aa and Aa

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

Alpha Thalassemia is controlled by ------- on chromosome number----

(1) Linked gene, 11

(2) Linked gene, 16

(3) Unlinked gene, 11

(4) Unlinked gene, 16

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