Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Autosomal homologous chromosomes
Select one:
a. are joined at the centromere
b. are the same size but different shape
c. have identical gene locations and alleles
d. consist of a copy of a paternal and a maternal chromosome
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- Autosomal homologous chromosomes a. are joined at the centromere b. are the same size but different shape c. have identical gene locations and alleles d. consist of a copy of a paternal and a maternal chromosomearrow_forwardRainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male sperm are haploid. In the wild, when the sperm fertilizes an egg, the extra set of chromosomes is kicked out, resulting in a diploid offspring.Triploid trout are produced in the lab to provide sterile fish stock for lakes. Shortly after the eggs are fertilized, scientists place them in a warm water bath to prevent the extra chromosomes from being removed. The result is a triploid fish that cannot reproduce.Rainbow Trout: n = 30Select the row that correctly shows the ploidy for the trout at different reproductive stages. Select one: a. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab n = 30 2n = 60 3n = 90 2n = 60 b. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab 2n = 60 n = 30 2n = 60 2n = 60 c. Female Egg Male Sperm Offspring Produced in wild Offspring Produced in lab 2n = 60 n = 30…arrow_forwardRainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male sperm are haploid. In the wild, when the sperm fertilizes an egg, the extra set of chromosomes is kicked out, resulting in a diploid offspring.Triploid trout are produced in the lab to provide sterile fish stock for lakes. Shortly after the eggs are fertilized, scientists place them in a warm water bath to prevent the extra chromosomes from being removed. The result is a triploid fish that cannot reproduce.Rainbow Trout: n = 30 Global warming is an issue affecting many species around the world. Warming has caused the temperatures in lakes and rivers to increase and stay elevated for longer periods of time. Select the FOUR numbers that describe the possible effects of global warming on the reproduction of rainbow trout in the wild and on biodiversity. The extra set of chromosomes remains. The extra set of chromosomes is removed. The offspring are diploid (2n). The offspring are triploid…arrow_forward
- The image below shows a standard human karyotype, from a metaphase cell. Note that the positioning of the chromosomes in the image is to aid visualization; they are not lined up this way in the cell. Вох 1 Вох 2 3 88 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 © 2012 Pearson Education, Inc. If the image represents a meiotic cell, what will happen to the DNA represented in Box 1 after meiosis is complete? а. It will be split equally between the four daughter cells. Ob. It will be split between two of the four daughter cells, with different amounts of DNA in each cell. O c. It will be split between two of the four daughter cells, with the same amounts of DNA in each cell. d It will all end up in one daughter cell.arrow_forwardThe karyotype of a young girl who is affected with Down syndrome revealed that she has 46 chromosomes. Her phenotypically normal older brother's karyotype revealed that he has 45 chromosomes. (a) Propose an explanantion for the chromosome number in both children (b) What would you expect the chromosome number of the parents of these two children?arrow_forwardPossible options: A. Autopolyploidy B. Allopolyploidy C. Chromosome duplication D. Pericentric inversionarrow_forward
- In fruit flies, chromosomal crossing over does not occur in meiosis in males, whereas crossing over does occur in meiosis in females. In fruit flies that are heterozygous at many genes (i.e. many maternal and paternal versions of the genes differ), at what stage would cells no longer be heterozygous for any gene during the process of meiosis? a)After the second meiotic division in males, and after the first meiotic division in females. b)After the second meiotic division in both males and females. c)After the first meiotic division in both males and females. d)After the first meiotic division in males, and after the second meiotic division in females.arrow_forwardWhich of the following statements are true regarding homologous pairs of chromosomes? Select all that apply. A. They are the same size B. Their prescence indicates a cell is a diploid C. They are identical copies of one another D. One of the homologous chromosomes in a set is synthesized during S phase E. They line up next to each other during metaphase I of meiosis F. They are separated in anaphase I of meiosisarrow_forward
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