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A quiz on Mutations to follow after Mutations notes by laldypop

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Mutations Quiz

Mutations Quiz

Question 1 of 6

1

What name is given to the process by which a spindle fibre fails during meiosis and one or more of the gametes produced receives an extra chromosome?

Select one of the following:

  • non-disjunction

  • meiosis

  • polyploidy

  • mutation

Explanation

Question 2 of 6

1

How many gametes (out of 4) will receive an extra chromosome if the spindle failure occurs during the first meiotic division?

Select one of the following:

  • 2

  • 4

  • 1

  • 0

Explanation

Question 3 of 6

1

If a normal human sperm fertilizes an egg containing an extra copy of chromosome 21, what is the diploid number of the zygote formed?

Select one of the following:

  • 44

  • 46

  • 47

  • 43

Explanation

Question 4 of 6

1

What is meant by the term polyploidy?

Select one of the following:

  • an increase in the number of chromosomes by 3 or more times

  • a decrease in the number of chromosomes by 3 or more times

  • an addition in the number of chromosomes in gametes

  • a subtraction in the number of chromosomes in gametes

Explanation

Question 5 of 6

1

How are polyploidy plants economically important to farmers?

Select one or more of the following:

  • they are resistant to disease

  • they are smaller so farmers will have a bigger yield

  • they make the coffee taste better

  • they give bigger yields

Explanation

Question 6 of 6

1

What name is given to a change which involves a chromosome breaking in two places and a segment of genes dropping out?

Select one of the following:

  • Deletion

  • Duplication

  • Inversion

  • Translocation

Explanation

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