Waec Biology Past Questions and Answers

Question 1386:

• WAEC 2011

Which of the following statements is not true about continuous variation? It

A. Is usually controlled by several genes
B. Can be influenced by environmental factors
C. Follows a normal distribution curve
D. Is usually controlled by one or two pair(s) of genes

Question 1387:

• WAEC 2011

Acquired characters are

A. Received from parents
B. Passed to offspring
C. Caused by the environment
D. Caused by mutation

Question 1388:

• WAEC 2011

Differences in characteristics observed between individuals of the same species is known as

A. Trait
B. Phenotype
C. Mutation
D. Variation

Question 1389:

• WAEC 2011

Which of the following statements best describes protein synthesis?

A. DNA is directly involved in translation
B. Translocation oft e ribosomes exposes a new codon for base pairing with an amino acid
C. Each tRNA with a particular anticodon always carries a different protein in the process
D. One amino acid is always carried by more than one

Question 1390:

• WAEC 2011

If a person has two alleles of the sickle cell anaemia gene, the person

A. Is a heterozygous carrier of the disease
B. Is immune to the disease and cannot pass it on to an offspring
C. Has the disease
D. Is probably of Asian ancestry