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Crossing over mixes up_____ . a. chromosomes c. zygotes b. alleles d. gametes
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- Which of the processes does not lead to variation in offspring with the same parents?* A. Random fusion of gametes from different parents. B. Random assortment of chromosomes in M1 C.Crossing over of chromosomes D.InterkinesisThe term endopolyploidy refers to the phenomenon of havinga. too many chromosomes.b. extra chromosomes inside the cell nucleus.c. certain cells of the body with extra sets of chromosomes.d. extra sets of chromosomes in gametes.Meiosis explains whya. you inherited half of your DNA from each of your parents.b. the sister chromatids in a chromosome are identical to each other.c. each of your somatic cells contains the same DNA.d. zygotes contain half as much DNA as somatic cells.
- Consider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a. Only meiosis I b. Mitosis c. Meiosis I and II d. Nondisjunction did not occur e. Only meiosis II Clear my choiceMeiosis the parental chromosome number.a. doubles c. maintainsb. halves d. mixes upThe process of meiosis ensures that organisms will have a. The same diploid number its parents have. b. Different numbers of chromosomes from what are parents have. c. The ability to reproduce by budding. d. A different haploid number from what its parents have. e. Splits into two daughter cells.
- which of these could lead to the mistake evident in the karyotype? A) a failure of cytokinesis after meiosis I in gamete formation B) a nondisjunction in meiosis II in gamete formation C) crossing over in meiosis ! in gamete formation D) fertilizaton by two sperm in zygote formationHomologous chromosomes move toward opposite poles of a dividing cell during a. fertilization b. meiosis II c. meiosis I d. mitosisa.)Meiosis in a plant b.)Meiosis in an animal c.)Telophase II d.)Meiosis in an animal e.)Mitosis in a plant
- How does the sexual life cycle increase the genetic variation in a species? a. by providing gametes with different combinations of parental chromosomes. b. by allowing the combination of chromosomes from two different individuals. c. by allowing recombination of the alleles on a chromosome. d. A and B only. e. A, B, and C. Explain your answer.Crossing over.... a. leads to the exchange of material between homologous chromosomes in meiosis. b. requires the pairing of homologous chromosomes in prophase of meiosis I. c. happens less frequently between genes that are far apart on a chromosome than between genes that are close together. d. a and b, but not c e. a, b, and cIn experiment of following chromosomal DNA movement through meiosis, Blue have 44 chromosomes in every cell. Determibne how many chromosomes you would expect to find in the following: a. sperm cell b. egg cell: c. Daughter Cell from mitosis: d. Daughter cell from Meiosis ll:
