One of Mendel’s experiments was repeated by crossing a red variety of pepper with that of a yellow variety
which produced all red offspring. The red offspring were then self pollinated and these produced both red
and yellow pepper. The yellow colour can be said to be

A. dominant to red

B. recessive to red

C. homozygous to red

D. heterozygous to red

E. linked to red

Which of the following statements is not true about chromosomes?

A. Each chromosome is made up of two chromatids

B. Body cells have diploid numbers of chromosomes

C. Homologous chromosomes do not occur in pairs naturally

D. The sex cells have haploid number of chromosomes

E. Chromosomes have many tranverse bands

Cross-breeding is a way of

A. developing superior varieties of plants only

B. developing superior varieties of animals only

C. developing disease-resistant varieties only

D. encouraging random reproduction in agriculture

E. applying the principles of heredity in agriculture

The wings of bats and birds, the flippers of whale and the fins of fish are examples of

A. adaptive radiation

B. vestigial organs

C. continuous variation

D. convergent evolution

E. divergent evolution.

Which of the following is a social insect?

A. Mosquito

B. Butterfly

C. Honey bee

D. Grasshopper

E. Cockroach

The phenomenon whereby some organisms get established in an environment after struggling for existence
by taking advantage of some special features possessed by the organism is called

A. partial selection

B. artificial selection

C. natural selection

D. mutation

E. competition

The statements below are about evolution of species
I. Members of a species vary
ll. Organisms produce many offspring
lll. The mechanism of evolution is inheritance of acquired characters
IV. Changes in the phenotype is brought about by the individual itself

Which of the statement(s) is/are related to the Darwin’s theory of evolution?

A. I only

B. II only

C. I, II and IV

D. I and II only

E. II and IV only

Which of the following fields of study may not yield strong evidence of evolution?

A. Fossil

B. Histology

C. Ecology

D. Genetics

E. Cytology