Waec Biology 2018 Past Questions and Answers

Question 41:

• WAEC 2018

The greatest contribution to genetic studies was made by

A. Gregor Mendel
B. Thomas Morgan
C. Charles Darwin
D. Robert Hooke

Question 42:

• WAEC 2018

The exchange of genes between homologous chromosomes is called

A. Crossing over
B. Back cross
C. Test cross
D. Mutation

Question 43:

• WAEC 2018

The diagrams above are illustrations of the inheritance of coat colour in mice. J, K, L, M and N are parents. The cross between two parent mice gave rise to offspring P, Q, R and S. Which of the offspring are all homozygous?

A. P
B. Q
C. S
D. R

Question 44:

• WAEC 2018

Genes that remain linked are those

A. Close to each other on the chromosomes
B. On the same locus on the chromosomes
C. On the homologous chromosomes
D. Which are allelic pair

Question 45:

• WAEC 2018

A plant cell has 14 chromosomes prior to mitosis. What is the number of chromosomes in the daughter cells?

A. 14
B. 56
C. 28
D. 7