Biology

What of the following occurrences is not a feature of meiosis?

A. Formation of four haploid cells B. Two successive nuclear cell division C. Pairing of homologous chromosomes at prophase D.…

6 years ago

What does the chemical composition of the genetic material of all living organisms consist of?

A. Deoxyribonucleic acid B. Adenosine diphosphate C. Adenosine triphosphate D. follicle stimulating hormone, Correct Answer: Option A A. Deoxyribonucleic acid

6 years ago

The effective cells involved in sickle-cell anaemia disease are?

A. phagocytes B. lymphocytes C. erythrocytes D. thrombocytes Correct Answer: Option C C. erythrocytes

6 years ago

The sudden change in a gene structure or chromosome number in an organism likely to cause an inheritable change in the phenotype is known as?

A. migration B. mutation C. mitosis D. meiosis Correct Answer: Option B B. mutation

6 years ago

The observable characteristics of an individual usually resulting from the interaction between the gene composition and the environment is referred to as?

A. allele B. genotype C. phenotype D. chromosome Correct Answer: Option C C. phenotype

6 years ago

Which of the following characters is not an example of discontinuous variation?

A. Skin colour B. Fingerprint C. Ability to roll tongue D. Sex type Correct Answer: Option A A. Skin colour

6 years ago

Which of the following human traits in a class of school children may give an approximate normal distribution curve when the variation is plotted?

A. Blood groups B. Ear shapes C. Sex distribution D. Heights Correct Answer: Option D D. Heights

6 years ago

Which of the following substances is not recycled in an ecosystem?

A. Carbon B. Energy C. Water D. Nitrogen Correct Answer: Option B B. Energy

6 years ago

Conservation may be promote by?

A. encouraging tree planting B. systematic deforestation C. overgrazing of pastures D. unabated bush timing Correct Answer: Option A A.…

6 years ago

To avoid over fishing in a lake, the following measures may be helpful except?

A. limiting fishing periods B. regulating the size of nets C. fishing throughout the year D. fish breeding exercise Correct…

6 years ago
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