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Name: Describe how nondisjunction in human female gametes can give rise to K
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Description: Describe how nondisjunction in human female gametes can give rise to Klinefelter and Turner syndrome offspring following fertilization by a normal male gamete.

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Biology

Describe how nondisjunction in human female gametes can give rise to Klinefelter and Turner syndrome offspring following fertilization by a normal male gamete.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 19QP: The majority of nondisjunction events leading to Down syndrome are maternal in origin. Based on the...

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Show via a diagram how the product(s) of a meiotic (either I or II) nondisjunction involving the X chromosome of a human female could, when fertilized by a normal male gamete, result in an offspring with Kleinfelter’s syndrome.
Based on this karyotype, what proportion of this women’s gametes would produce viable embryos?
Please explain the outcomes of nondisjunction in meiosis one versus nondisjunction in meiosis two, in terms of the effect on the gametes. Please give an example of a defect that results from nondisjunction in meiosis.
A sexually reproducing animal has two genes that assort independently, one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism?
Describe the XX-XO system of sex determination. In this system, which is the heterogametic sex and which is the homogametic sex?
Chromosomal nondisjunction of the X chromosome in female gametes of humans means that live offspring can include ________. A) females with XX or XXX, and males with XY or XXY B) females with XX, and males with XY C) females with XX, and males with XY or XO D) females with XX or XXX, and males with XY or XO E) females with XX or XO, and males with XY or OY
Which of the following correctly describes the gametes that will form as a result of nondisjunction during anaphase II in a human male? a. Two sperm with 24 chromosomes and two sperm with 22 chromosomes b. Two sperm with 23 chromosomes, one sperm with 22 chromosomes, and one sperm with 24 chromosomes c. Four sperm with 24 chromosomes d. Four sperm with 22 chromosomes
An individual with XY chromosomes produces gametes where 50% have an extra sex chromosome and 50% have no sex chromosomes. Given this information, what is the probability a fertilized egg will have the genotype XO? Assume that the egg has the expected 23 chromosomes prior to fertilization. 1/3 1/2 1/8 1/4 It is not 1/3 or 1/4
Three genes (A, B, and C) are found on three different chromosomes. For the following diploid genotypes, describe all of thepossible gamete combinations.A. Aa Bb Cc C. Aa BB CcB. AA Bb CC D. Aa bb cc
Assuming that independence assortment occurs during meiosis what types of gametes will form individuals with the following genotypes?
In C. elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X chromosome. An hermaphrodite who is Lon and Unc is mated to a wild-type male. An F1 hermaphrodite is mated to a wild-type male. What are the expected percentages of the different phenotypes among the male progeny?
Butterflies have an X-Y sex-determination system that is different from that of flies or humans. Female butterflies may be either XY or X0, while butterflies with two or more X chromosomes are males. This photograph shows a tiger swallowtail gynandromorph, which is half male (left side) and half female (right side). Given that the first division of the zygote divides the embryo into the future right and left halves of the butterfly, propose a hypothesis that explains how nondisjunction during the first mitosis might have produced this unusual-looking butterfly. Question is also in the picture.