Free Principles Of Inheritance And Variation (Daily Quiz: 6) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

When a single gene influences more than one traits it is called

(a) pseudodominance

(b) epistasis

(c) pleiotropy

(d) None of these

Question-2

In Mendelian dihybrid cross, how many individuals are homozygous dominant for both the genes in $F_2$ generation?

(a) $2/16$

(b) $1/16$

(c) $4/16$

(d) $6/16$

Question-3

Both husband and wife have normal vision though their fathers were colour blind. The probability of their daughter becoming colour blind is

(a) 50%

(b) 25%

(c) 0%

(d) 75%

Question-4

The ratio of phenotypes in $F_{2}$ of a monohybrid cross is

(a) 1 : 2 : 1

(b) 3 : 1

(c) 9 : 3 : 3 : 1

(d) 2 : 1

Question-5

Extra nuclear chromosomes occur in

(a) mitochondria and ribosome

(b) chloroplast and mitochondria

(c) peroxisome, ribosome

(d) chloroplast and lysosome