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Biology Past Questions and Answers

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Waec Biology Questions

Question 926:

Which of the following traits in humans can be affected by environmental factors?

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A Skin colour
B Eye colour
C Baldness
D Tongue-rolling

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Question 927:

Heterozygous tall plants were crossed with pure-breeding dwarf plants of the same species. What were the approximate percentages of the offspring?

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A 100% tall 0% dwarf
B 75% tall 25% dwarf
C 50% tall 50% dwarf
D 25% tall 75% dwarf

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Question 928:

In the F₁ generation of Mendel’s experiment obtained by crossing pea plants of long stems with those of short stems,
What was his observation?

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A Some were short while others were long
B All were long
C Half of them were long while half were short
D Three-quarters were long while one quarter were short,

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Question 929:

Which of the following statements is correct about the chromosomes in the gametes? At the end of the second
meiotic division

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A Each gamete contains only paternal hereditary information
B Chromosomes contain a random mixture of paternal and maternal chromosomes.
C Chromosomes in the four gamete cells are diploid in number
D Chromosomes contain only maternal hereditary information

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Question 930:

Which of the following organisms exhibit division of labour?

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A Houseflies
B Butterflies
C Cockroaches
D Termites

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