Question

In which mode of inheritance do you expect more maternal influence among the offspring?

• A. Y-linked
• B. X-linked
• C. Autosomal
• D. Cytoplasmic

Answer 1

The correct option is D Cytoplasmic

The cytoplasmic inheritance is the phenomena of inheritance of maternal characters present in the genetic material in the cytoplasm. It is mainly caused due to the expression of genes present in the extra-chromosomal segments. Mitochondria and chloroplast are the only organelles which are semi-autonomous which have their own DNA. Mitochondrial DNA is known as mt-DNA and the chloroplast is known as ct-DNA. The functional genes of the mitochondria and chloroplast express themselves and allow inheritance of maternal characters.

X linked inheritance is the inheritance of the characters which are regulated by the genes present on the X chromosomes.

Y linked inheritance is the inheritance of the characters which are regulated by the genes present on the Y chromosomes.

Autosomal inheritance is the inheritance of characters regulated by the autosomes.

So, the correct answer is 'Cytoplasmic'