WAEC Biology Past Questions & Answers - Page 352

1,756.

Increasing specialization of structure and function among animals of the same class and order for survival in new and different environments is called

A.

adaptive radiation

B.

phylogeny

C.

homology

D.

analogy

E.

ontogeny

Correct answer is A

No explanation has been provided for this answer.

1,757.
1,758.

If a cross is made between a pure-breeding red flowered plant and a pure-breeding white flowered plant
where R is dominant for red flower and r is recessive for white, the most likely result of F generation will be

A.

75% red flowers and 25% white flowers

B.

all red flowers

C.

75% white flowers and 25% red flowers

D.

50% red flowers and 50% white flowers

E.

all white flowers

Correct answer is B

No explanation has been provided for this answer.

1,759.

The haploid number of chromosomes in man is

A.

48

B.

46

C.

42

D.

24

E.

23

Correct answer is E

No explanation has been provided for this answer.

1,760.

Which of the following best describes the homologous chromosomes? They are

A.

a product of the division of a chromosome

B.

two identical chromosomes from each parent

C.

chromosomes arranged on spindle fibers during cell division

D.

daughter chromatids formed during meiotic division

E.

chromosomes during telophase of mitotic division

Correct answer is B

No explanation has been provided for this answer.