Heredity And Variations - Biology Jamb Past Questions and Answers

Question 126 :

• JAMB 2019

The change in the genetic make up of an organism resulting in an inheritable characteristics which is new is

A. Mutation
B. Locus
C. Hybrid
D. Diploid

Question 127 :

• JAMB 2019

Albinism is an expression of trait controlled by

A. Chromosomes
B. Recessive genes
C. Dominant genes
D. Mutation

Question 128 :

• JAMB 2019

One of the following is not the theory of natural selection stated by Charles Dawin

A. Characteristics acquired through use or disuse are transmitted offspring
B. Variations appear by themselves in a population
C. Heredity variations are transmitted to offspring
D. Species that are the fittest for the environment contribute more offsprings to the next needs of the generation

Question 129 :

• JAMB 2019

Which of the following is an example of continous variation?

A. Human blood groups
B. Sex difference in human
C. Haemoglobin types
D. Height in humans

Question 130 :

• JAMB 2020

The probability of a baby being a boy or a girl depends on the contribution of the

A. Father's sex cells
B. Father's stomatic chromosome
C. Mother's sex cell
D. Mother's X-chromosome