WAEC Biology Past Questions & Answers - Page 261

1,301.

Courtship behaviour in animals may include all of the following except

A.

howling of a dog

B.

dancing of the worker bee

C.

croaking of a toad

D.

basking in the sun by a lizard

Correct answer is D

No explanation has been provided for this answer.

1,302.

a pure breeding white cat (homozygous dominant) mates with a pure breeding black cat (recessive), what would be the fur colour of F1 generation

A.

Homozygous white

B.

Homozygous black

C.

Heterozygous white

D.

Heterozygous black

Correct answer is C

No explanation has been provided for this answer.

1,303.

The haploid number of chromosomes in humans is

A.

48

B.

46

C.

24

D.

23

Correct answer is D

No explanation has been provided for this answer.

1,304.

The contrasting pair of genes affecting a trait and located at the same position on homologous chromosomes is
referred to as

A.

chromatids

B.

mutants

C.

alleles

D.

chromatin

Correct answer is C

No explanation has been provided for this answer.

1,305.

If a heterozygous red flowered plant, (Rr) was self-fertilized, the offspring would be expected to be

A.

all red flowered plants

B.

all white flowered plants

C.

red flowered, white flowered plants

D.

white flowered red flowered plants

Correct answer is C

No explanation has been provided for this answer.