HEREDITY AND VARIATIONS - Jamb Biology Past Questions and Answers

Question 131:

• JAMB 2020

Both recesssive and dominant characters are found

A. On different chromosome in the cell
B. At the same logus of a homologous chromosome
C. At a different loci of a homologous chromosome
D. On the same chromatid in a chromosome

Question 132:

• JAMB 2020

Paternity disputes can most accurately be resolved through the use of

A. Blood group typing
B. Finger printing
C. Tongue rolling
D. DNA Analysis

Question 133:

• JAMB 2020

Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents

A. Both parent possess genes for shortness
B. The father possess a gene for shortness
C. Nature makes the child short
D. None of the above

Question 134:

• JAMB 2021

If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?

A. 1/2
B. 1/4
C. 1
D. 3/4

Question 135:

• JAMB 2021

If a DNA strand has a base sequence TCA, its complementary strand must be?

A. ATG
B. TAG
C. GAT
D. AGT