Waec Biology 2011 Past Questions and Answers

Question 51:

• WAEC 2011

Acquired characters are

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

Question 52:

• WAEC 2011

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

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

Question 53:

• 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 54:

• 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

Question 55:

• WAEC 2011

What is the probability? of a man of blood group AB married to a woman of blood group O producing a child of blood group O?

A. 0%
B. 25%
C. 50%
D. 75%