Post Utme Biology Past Questions and Answers

Question 311:

The phenotype of an organism is a function of ____________

A. Dominance
B. Genotype and environment
C. Homozygous and environment
D. Heterozygosity

Question 312:

Which of the following inherited conditions usually shows incomplete dominance?

A. Sickle cell anaemia
B. Haemophilia
C. Tongue rolling ability
D. Baldness

Question 313:

The effect of chlorofluorocarbon is ____________

A. Reduction of oxygen concentration in the atmosphere
B. Depletion of the ozone layer
C. Screening of ultraviolet rays
D. Increase of carbon dioxide concentration

Question 314:

The order of evolutionary trend in plants is ____________

A. Thallophyta, Bryophyta, Pteridophyta and Spermatophyta
B. Bryophyta, Thallophyta, Ptendophyta and Spennatopliyta
C. Bryophyta, Pteridophyta, Spermatophyta and Thallophyta
D. Spermatophyta, Bryophyta, Pteridophyta and Thallophyta

Question 315:

Which of the following cannot be taken as a direct observation of Natural Selection in recent times?

A. Development of long necks in giraffes
B. Selective breeding in cattle
C. Insecticide resistance of some mosquitoes
D. Industrial melanism in moths