Asexual and Sexual Reprodiction #1

Meiosis is a type of cell division in which germ cells divide to produce haploid cells. Where does meiosis occur?

• bone cells

• brain cells

• ovary cells

• muscle cells

Why does sexual reproduction result in more genetic diversity than asexual reproduction?

• More organisms reproduce this way.

• Offspring grow in different environments.

• Traits from two parents are combined.

• Offspring come from identical parents.

What types of cells are found only in organisms that reproduce sexually?

• gametes

• skin cells

• neurons

• blood cells

A bacterium can reproduce quickly by splitting into two cells. Which of these BEST describes the genetic make-up of the resulting two cells?

• They have half the amount of genetic material, which grows in size.

• They have the same amount of genetic material and are identical.

• They have the same amount of genetic material but are not identical.

• They have half the amount of genetic material, but then it duplicates itself.

An advantage of asexual reproduction is that it does not require fertilization. What advantage do the offspring of sexual reproduction MOST likely have as a result of fertilization?

• Traits will be perfectly adapted to the environment.

• DNA variation may allow survival in a changing environment.

• Unfavorable traits from each parent will be eliminated.

• DNA will be less varied and therefore more stable.

Which is the greatest benefit of sexual reproduction?

• capable of producing offspring genetically identical to parent

• ability to produce genetically different offspring

• ability to reproduce without a mate

• capable of reproducing by meiosis

Onions can reproduce from bulbs. One parent bulb generates daughter bulbs with duplicate genetic information. Which is the MOST likely advantage of this kind of reproduction?

• Genetic variation is maximized.

• Population size remains constant.

• Beneficial mutations are inevitable.

• Many offspring are produced rapidly.

The gametes of human males and females have the same number of chromosomes. Which BEST describes what happens to the chromosomes when typical male and female gametes combine to produce offspring?

• The chromosomes change shape.

• The number of chromosomes doubles

• The number of chromosomes reduces by half.

• The chromosomes become larger in size.

The muscle cells of an elephant contain 62 chromosomes. How many chromosomes are in an elephant egg cell?

• 31

• 62

• 122

• 244

Vertebrate animals produce offspring by sexual reproduction. Which is an advantage of this type of reproduction?

• Time and energy is used to find a mate in the population.

• There is increased genetic diversity within the population.

• The offspring grows faster than one that is produced asexually.

• The offspring receives its DNA from one parent and is identical to that parent.