A) diploid
B) haploid
C) zygotes
D) somatic
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A) to provide a diploid set of chromosomes
B) for energy production
C) to provide a haploid set of chromosomes
D) to serve as a structure for the physical propulsion of the sperm
E) to serve as a reserve of energy and nutrients for the zygote
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D
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A) ovum.
B) gamete.
C) zygote.
D) oocyte.
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A) crossing over
B) mitosis
C) crossing over and independent assortment
D) mutation and gene transfer
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A) genetically unique.
B) the product of a special type of sexual reproduction.
C) the product of self-fertilization.
D) the product of a recombination event.
E) genetically identical to the plant from which the branch was taken.
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A) They zygote would have the same number of chromosomes as the parents.
B) The zygote would have double the number of chromosomes as the parents.
C) The zygote would have half the number of chromosomes as the parents.
D) The zygote would undergo meiosis again to halve the number of chromosomes.
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A) Cytokinesis produces four haploid gametes.
B) Sister chromatids separate and move to opposite poles.
C) Cytokinesis produces two cells that will each go through meiosis II.
D) Homologous chromosomes separate.
E) One cell divides two times, without interruption, into four cells.
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A) in the seventh month of fetal life
B) immediately after release from the ovary
C) immediately after birth
D) after fertilization
E) as soon as puberty begins
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A) They have the right number of chromosomes but no cytoplasm.
B) They have the right number of chromosomes but too much cytoplasm.
C) They are haploid, but the chromosomes are still in duplicated form.
D) The chromosomes have divided, but there has been no cytokinesis.
E) The homologous chromosomes have not yet separated.
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C
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A) crossing over
B) combining of gametes from two different individuals
C) independent assortment of chromosomes at the metaphase plate
D) duplication of DNA
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A) Sperm are produced by mitosis; eggs are produced by meiosis.
B) Sperm are produced by meiosis; eggs are produced by mitosis.
C) Four mature sperm are produced from one cell; one large egg is produced from one cell.
D) Eight mature sperm are produced from one cell; two eggs are produced from one cell.
E) Sperm are produced by somatic (body) cells; eggs are produced by gametes.
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A) two diploid cells.
B) four haploid cells.
C) four diploid cells.
D) two haploid cells.
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A) 12²⁰
B) 12²
C) 2¹²
D) 10¹²
E) 12¹²
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A) Z; male
B) Z; female
C) W; female
D) W; male
E) W; either male or female
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B
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A) 4 cells, each with 20 chromosomes
B) 4 cells, each with 10 chromosomes
C) 2 cells, each with 10 chromosomes
D) 2 cells, each with 20 chromosomes
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A) once; once
B) twice; once
C) twice; twice
D) once; twice
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Oogonia are produced before birth,up to ...View Answer
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A) This allows the egg to receive most of the cytoplasm.
B) This reduces egg size by distributing most of the cytoplasm to the polar bodies.
C) This allows the egg to receive all the chromosomes.
D) This removes Golgi complex, lysosomes, and other organelles from the egg.
E) This creates more polar bodies, which are the cells that will actually be fertilized.
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