MCQS CORNER

Refer to the given statements.

(i) Incomplete or mosaic inheritance is an example of the pre-Mendelian concept of blending inheritance.

(ii) Test cross is a special type of back cross.

(iii) Chromosomal aberrations are commonly observed in cancer cells.

(iv) Thalassaemia is a Mendelian disorder.

Which of the above statements are correct?

Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called 

Failure of cytokinesis after telophase stage of cell division results in an increase in a whole set of chromosomes in an organism. The phenomenon is called as

Klinefelter's syndrome is characterised by a karyotype of

Which of the following is mismatched pair of disease and its related symptom?

Refer to the given figure representing karyotype of individual who inflicted with this chromosomal disorder.

Select the correct statement regarding them.

Find out the mismatched pair

Due to nondisjunction of chromosomes during spermatogenesis, some sperms carry both sex chromosomes $(22\mathrm{A}+\mathrm{XY})$ and some sperms do not carry any sex chromosome $(22\mathrm{A}+\mathrm{O}).$ If these sperms fertilise normal eggs $(22\mathrm{A}+\mathrm{X}),$ What types of genetic disorders respectively appear among the offspring?