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Refer the given statements (i) Incomp...

Refer the given statements
(i) Incomplete or mosaic inheritance is an example of 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 ?

A

(i) and (ii) only

B

(ii),(iii) and (iv)

C

(ii) and (iv) only

D

(i) and (iv) only

Text Solution

Verified by Experts

The correct Answer is:
B
Incomplete (partial or mosaic) dominance is the phenomenon where none of the two contrasting alleles or factors is diminant. The expression of the character in a hybrid or `F_(1)` individual is intermediate or a fine mixture of the expression of the two factor (as found in homozygous state). Incomplete or mosaic inheritance is not an example of pre-mendelian concept of blending inheritance because the parental types reappear in the `F_(2)` generation.
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