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Concepts of Biology

Review Questions

Concepts of BiologyReview Questions

2.

What is a likely evolutionary advantage of sexual reproduction over asexual reproduction?

  1. sexual reproduction involves fewer steps
  2. less chance of using up the resources in a given environment
  3. sexual reproduction results in greater variation in the offspring
  4. sexual reproduction is more cost-effective
3.

Which type of life cycle has both a haploid and diploid multicellular stage?

  1. an asexual life cycle
  2. diploid-dominant
  3. haploid-dominant
  4. alternation of generations
4.

Which event leads to a diploid cell in a life cycle?

  1. meiosis
  2. fertilization
  3. alternation of generations
  4. mutation
5.

Meiosis produces ________ daughter cells.

  1. two haploid
  2. two diploid
  3. four haploid
  4. four diploid
6.

At which stage of meiosis are sister chromatids separated from each other?

  1. prophase I
  2. prophase II
  3. anaphase I
  4. anaphase II
7.

The part of meiosis that is similar to mitosis is ________.

  1. meiosis I
  2. anaphase I
  3. meiosis II
  4. interkinesis
8.

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism?

  1. 8
  2. 16
  3. 32
  4. 64
9.

The genotype XXY corresponds to:

  1. Klinefelter syndrome
  2. Turner syndrome
  3. Triplo-X
  4. Jacob syndrome
10.

Abnormalities in the number of X chromosomes tend to be milder than the same abnormalities in autosomes because of ________.

  1. deletions
  2. nonhomologous recombination
  3. synapsis
  4. X inactivation
11.

Aneuploidies are deleterious for the individual because of what phenomenon?

  1. nondisjunction
  2. gene dosage
  3. meiotic errors
  4. X inactivation
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