5 The short legged flying weasel has a color gene with two alleles: purple and red. It also has a hair length gene that has long and short alleles. A certain female's number 12 chromosorhes both have the purple allele of the color gene and number 19 chromosomes both have the long hair version of the hair gene. As cells in her ovaries undergo meiosis, her resulting eggs (ova) may have which of the following? either two number 12 chromosomes with purple genes or two with red genes either two number 19 chromosomes with long genes or two with short genes one chromosome 12 with one purple allele and one chromosome 19 with one long hair allele either one purple or one red allele in addition to either one long or one short allele

5 The short legged flying weasel has a color gene with two alleles: purple and red. It also has a hair length gene that has long and short alleles. A certain female's number 12 chromosorhes both have the purple allele of the color gene and number 19 chromosomes both have the long hair version of the hair gene. As cells in her ovaries undergo meiosis, her resulting eggs (ova) may have which of the following? either two number 12 chromosomes with purple genes or two with red genes either two number 19 chromosomes with long genes or two with short genes one chromosome 12 with one purple allele and one chromosome 19 with one long hair allele either one purple or one red allele in addition to either one long or one short allele

Name: 5The short legged flying weasel has a color gene with two alleles: pu
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Description: 5The short legged flying weasel has a color gene with two alleles: purple and red. It also has a hair length gene that has long and shortalleles. A certain female's number 12 chromosorhes both have the purple allele of the color gene and number 19 c

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter18: Cell Reproduction

Section: Chapter Questions

Problem 3CT: Adams maternal and paternal chromosomes have alternate forms of a gene that influences whether a...

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BPA and Abnormal Meiosis In 1998, researchers at Case Western University were studying meiosis in mouse oocytes (germ cells) when they saw an unexpected and dramatic increase of abnormal events (FIGURE 12.6). Improper segregation of chromosomes during meiosis is one of the main causes or human genetic disorders. The spike in abnormal meiosis began right after the mouse facility started washing the animals' plastic cages and water bottles in a new, alkaline detergent. The detergent had damaged the plastic, which as a result was leaching bisphenol A (BPA). BPA is a synthetic chemical that mimics estrogen, the main female sex hormone in animals. Though it has since been banned for use in baby bottles, BPA is still widely used to manufacture other plastic items and epoxies (such as the coating on the inside of metal cans of food). BPA-free plastics are often manufactured with a related compound, bisphenol S (BPS), that has effects similar to BPA. FIGURE 12.6 Abnormalities in meiosis that occurred after exposure to BPA. Top, the most abnormal meiosis events occurred in mice that were housed in damaged plastic caging with damaged plastic bottles. Damaged plastic releases BPA. Bottom, fluorescent micrographs show the chromosomes (red) and spindle (green) in nuclei of mouse germ cells in metaphase I. A Normal metaphase; BD abnormal metaphase. What is abnormal about metaphase I as it is occurring in the oocytes shown in FIGURE 12.6B, C, and D?
Adams maternal and paternal chromosomes have alternate forms of a gene that influences whether a person is right-handed or left-handed. One form says right and its partner says left. Visualize one of Adams spermatogonia, in which chromosomes are being duplicated prior to meiosis. Visualize what happens to the chromosomes during anaphase I and II. (It might help to use toothpicks as models of the sister chromatids of each chromosome.) What fraction of Adam's sperm will carry the gene for right-handedness? For left-handedness?
Meiosis Explains Mendels Results: Genes Are on Chromosomes The following diagram shows a hypothetical diploid cell. The recessive allele for albinism is represented by a, and d represents the recessive allele for deafness. The normal alleles for these conditions are represented by A and D, respectively. a. According to the principle of segregation, what is segregating in this cell? b. According to Mendels principle of independent assortment, what is independently assorting in this cell? c. How many chromatids are in this cell? d. Write the genotype of the individual from whom this cell was taken. e. What is the phenotype of this individual? f. What stage of cell division is represented by this cell (prophase, metaphase, anaphase, or telophase of meiosis I, meiosis II, or mitosis)? g. After meiosis is complete, how many chromatids and chromosomes will be present in one of the four progeny cells?
Assuming that such a fly would be viable, what would be the sexof a fruit fly with the following chromosomal composition?A. One X chromosome and two sets of autosomesB. Two X chromosomes, one Y chromosome, and two sets ofautosomesC. Two X chromosomes and four sets of autosomesD. Four X chromosomes, two Y chromosomes, and four sets ofautosomes
Which of the following cells canundergo meiosis?a. the diploid body cells of an animalb. haploid gametesc. germ cells
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In meiosis _______ are separated during anaphase I, and _______ are separated during anaphase II
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ry of an orgahism ( Choose ) of the pairs of chromosomes from a cell diploid karyotype n each pair autosomes letermine the sex of the individual haploid sex chromosomes omes (2N) homologous chromosomes, or homologs fife cycle
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