Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 10.4, Problem 1CYL
Summary Introduction
To explain:
The way through which nondisjunction produces offspring with too many or too few offspring.
Introduction:
During the metaphase of the meiosis I stage and during the meiosis II, the homologous pair of the chromosomes and sister chromatids respectively align at the equatorial plate. The spindle fibers pull the chromosome or the chromatids towards the pole in anaphase I and anaphase II respectively. This process of separation of the chromosome is known as the disjunction of the chromosomes.
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Chapter 10 Solutions
Biology
Ch. 10.1 - Prob. 1CSCCh. 10.1 - Prob. 1CYLCh. 10.1 - Prob. 2CYLCh. 10.1 - Prob. 3CYLCh. 10.2 - What would be the consequences for the resulting...Ch. 10.2 - What would be the genetic consequences for the...Ch. 10.2 - Prob. 1CSCCh. 10.2 - describe the steps and outcome of meiotic cell...Ch. 10.2 - Prob. 2CYLCh. 10.3 - explain how meiosis and sexual reproduction...
Ch. 10.4 - Prob. 1HYEWCh. 10.4 - Prob. 1CYLCh. 10.4 - describe some of the human genetic disorders that...Ch. 10.4 - Prob. 1TCCh. 10 - Prob. 1MCCh. 10 - Prob. 2MCCh. 10 - Prob. 3MCCh. 10 - Prob. 4MCCh. 10 - Prob. 5MCCh. 10 - Meiotic cell division produces ________ (how many)...Ch. 10 - During ___________ of meiosis 1, paired homologous...Ch. 10 - Prob. 3FIBCh. 10 - Prob. 4FIBCh. 10 - Prob. 5FIBCh. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Describe how meiosis provides for genetic...Ch. 10 - Define nondisjunction, and describe common...Ch. 10 - Many plants car. reproduce sexually or asexually....
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- What is independent assortment? Does independent assortment occur during mitosis or during meiosis?arrow_forwardIf a homozygous recessive individual is crossed with a homozygous dominant individual, what percent of their offspring will be heterozygous?arrow_forwardDraw a Punnett square for a female who is a heterozygote and a male who is a dominant homozygotes. What is the likelihood that this couple will have an offspring with Tay Sachs disease?arrow_forward
- What is the probability that the parents below will produce the indicated offspring? (Assume all genes are on different chromosomes.) without punnet square AaBBDdggHhNn x AAbbDdGgHhNn produce AABbddGgHhNN offspringarrow_forwardExplain how nondisjunction in meiosis is responsible for chromosome abnormalities such as Down syndrome, Klinefelter syndrome, and Turner syndrome.arrow_forwardWhat does each letter in the crossing over in meiosis represent? The picture below is the example of the crossing over.arrow_forward
- A gene that controls the ability to see red and green is located on the X chromosome but not on the Y chromosome. There is a recessive nonfunctional allele for this gene that can cause red-green color blindness if the person possessing it does not also have the dominant normal gene. Consider the case of a carrier mother who is heterozygous for the red-green vision gene and a father who has normal vision. Use XB = normal vision, Xb = color-blind vision. What is the chance the parents would have a color-blind boy? A color-blind girl? What about a girl or boy with normal vision? Redo the Punnett square for a carrier mother (XBXb) and a color-blind father (XbY). Do the chances of having color-blind children change? How?arrow_forwardsymptoms of fragile X syndrome are more severe in progeny generation than in the parental generation. Is an example of 1) variable expressive 2) epistasis 3) pleiotropy 4) reduced penetrance 5) anticipationarrow_forwardD EX In a cross of 2 plants, one with red flowers and round leaves and the other with blue flowers and long leaves, what offspring would best describe the law of independent assortment? B all have blue flowers/ long leaves all have red flowers/ round leaves C) all have purple flowers/ oblong leaves D there is a mix of parental looking, red flowers/ long leaves, and blue flowers/ round leavesarrow_forward
- What cross will result in a ratio of 3 dominant phenotype offspring for every 1 recessive offspring? What cross will result in a 1:2:1 genotype ratio in the offspring? What cross will result in all homozygous recessive offspring?arrow_forwardHow often do mistakes occur in meiosis?arrow_forwardList the three principal mechanisms that generate new genetic combinations in meiosis.arrow_forward
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