Sexual Reproduction

Concept: Sexual Reproduction and Heredity


Concept: Ploidy, Germ Cells, and Fertilization


Concept: Alteration of Generations and the Paradox of Sex


Problem: Mitosis is nuclear division that yields _________ cells, while meiosis is nuclear division that produces _______ cells.


Problem: Multicellular organisms are made of diploid cells, except for their gametes.


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Sexual Reproduction Additional Practice Problems

What determines development of the male or female reproductive system in the developing fetus?

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Which of the following specifically represent duplicated (exact copies) of DNA?

a. two homologous chromosomes

b. a diploid set of chromosomes

c. a haploid set of chromosomes

d. two sister chromatids

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Asexual reproduction differs from sexual reproduction in that: 

a.  Asexual reproduction produces genetically diverse offspring

b.  Asexual reproduction occurs only in bacteria

c.  Asexual reproduction produces offspring that are virtually identical

d.  Asexual reproduction does not occur in animals

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A germline mutation occurs in cells that give rise to: 

a. Gametes

b. Diploid cells

c. Skin cells

d. Nonsex cells

e. Liver cells

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An example of a haploid cell is: 

a. A skin cell

b. A sperm cell

c. A zygote

d. A stem cell

e. All are correct

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If a sperm cell combines with an egg cell the result is a: 

a. Diploid cell

b. Gamete

c. Haploid cell

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A cell with one set of chromosomes would be termed a ________________ cell. 

a. Diploid

b. Sister

c. Somatic

d. None of the above are correct

e. Haploid

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A cell with two full sets of chromosomes would be termed a _______________ cell. 

a. Haploid

b. Sister

c. Diploid

d. Gamete

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Chromosomes that look alike and carry the same sequence of genes for the same traits are: 

a. The X and Y chromosome

b. All the autosomes

c. Homologous chromosomes

d. Found in females only

e. Found in males only

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All sexual life cycles include: 

a. Mitosis, gamete formation, and fertilization

b. Mitosis, meiosis, and gamete formation

c. Meiosis, gamete formation, and fertilization

d. Mitosis, fertilization, and meiosis

e. None of these are correct

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A single chromosome has: 

a. Multiple genes each with a single allele

b. Multiple genes each with multiple alleles

c. A single gene with a single allele

d. A single gene with multiple alleles

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Homologous chromosomes have: 

a. The same genes but can have different alleles

b. The same genes and alleles

c. Different genes and alleles

d. Different genes, but can have the same alleles

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If a diploid cell has 14 chromosomes, it will have: 

a. 14 pairs of homologous chromosomes

b. 7 pairs of homologous chromatids

c. 14 pairs of homologous chromatids

d. 7 pairs of homologous chromosomes

e. 14 alleles

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a. Are chromosomes that are the same for both sexes

b. Include the Y chromosome in humans

c. Include the X chromosome in humans

d. Are the sex chromosomes

e. All are correct

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Alternate forms of the same gene are called: 

a. Chromatids

b. Centromeres

c. Chromosomes

d. Alleles

e. Traits

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We describe DNA as the hereditary material of an organism. What does it mean for something to be hereditary?

a. It must be located in the nucleus

b. It must have an important effect on cell function

c. It must be passed from one generation to the next

d. It must be present in all offspring

e. It must be incredibly complex

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