Biology Past Questions

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2641

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

A. Carbon
B. Energy
C. Water
D. Nitrogen

View Answer & Discuss WAEC 2008

2642

Which of the following statements about phenylthiocarbamide (PTC) is not correct?

A. Some people BHG the taste of PTC to be bitter
B. Others find this substance to be tasteless
C. Ability to taste this chemical is inheritable
D. Ability to taste the chemical is hot inheritable

View Answer & Discuss (6) WAEC 2008

2643

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

A. Skin color
B. Fingerprint
C. Ability to roll tongue
D. Sex type

View Answer & Discuss (3) WAEC 2008

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2644

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

View Answer & Discuss (2) WAEC 2008

2645

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

View Answer & Discuss (2) WAEC 2008

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