BIOS 100 Chapter 9 - A) the X and Y chromosome. B) all the autosomes...

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BIOS 100 Chapter 9

• Chromosomes that look alike and carry the same sequence of genes for the same traits are
• the X and Y chromosome.
• all the autosomes.

c)homologous chromosomes.

• found in females only.

e) found in males only.:

Answer c)homologous chromosomes.

• Meiosis is a process that produces
• sperm cells.
• begg cells.
• c)gametes.
• haploid cells.

e) All answers are correct.:

Answer e)All answers are correct.

• Sexual reproduction is important to the survival of a species in a changing environment

because

• sexual reproduction requires less overall energy expenditure than asexual reproduction.
• sexual reproduction produces genetically different individuals.
• sexual reproduction requires only one individual.
• sexual reproduction produces genetically-identical individuals.

e) All answers are correct.:

Answer b)sexual reproduction produces genetically different individuals.

• 2n is an abbreviation for

a)diploid.b)gametes.c)haploid.d)mitosis.

e)meiosis.:

Answer a)diploid.

• Diploid means having
• one complete set of chromosomes.
• three complete sets of chromosomes. 1 / 2

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• two complete sets of chromosomes.
• two chromosomes in each somatic cell.

e) two chromosomes in each gamete.:

Answer c)two complete sets of chromosomes.

• If human gametes were diploid
• the products of fertilization would have the same number of chromosomes as their parents.
• the products of fertilization would have fewer chromosomes than their parents.
• fertilization could not occur.
• the products of fertilization would have more chromosomes than their par- ents.

e) the embryo would be diploid.:

Answer d)the products of fertilization would have more chromosomes than their parents.

• 1n is an abbreviation for

a)haploid.

• somatic cells.

c)diploid.d)mitosis.

e)meiosis.:

Answer a)haploid.

• In humans, germ cells are located in

a)bone marrow. b)blood.

• all cells.
• all tissues.

e) testes and ovaries.:

Answer e)testes and ovaries.

• A diploid germ cell will produce cells that have reduced the chromosome number by half,

generating four haploid nuclei in a)fertilization.b)mitosis.c)meiosis.d)replication.

e)mutation.:

Answer c)meiosis.

• After the completion of meiosis in humans, a diploid germ cell has produced cells
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