BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 13.2, Problem 1LO
Summary Introduction
To explain: The relationship between sex chromosomes and sex determination.
Introduction: All eukaryotic organisms contain chromosomes, and the number of chromosomes varies in different organisms. By studying the fruit flies Drosophila melanogaster, T. H. Morgan correlated sex chromosomes with the inheritance of a trait. During meiosis, a female Drosophila generates only X-bearing gametes, however, a male fly generates both Y-bearing and X-bearing gametes. A female fly (XX zygote) develops when an X sperm is involved in the fertilization and a male fly (XY zygote) develops when a Y sperm is involved in the fertilization.
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Explain how the X and Y chromosomes are able to pair together
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Chapter 13 Solutions
BIOLOGY
Ch. 13.1 - Describe sex-linked inheritance in fruit flies.Ch. 13.1 - Prob. 2LOCh. 13.2 - Prob. 1LOCh. 13.2 - Explain the genetic consequences of dosage...Ch. 13.3 - Prob. 1LOCh. 13.4 - Prob. 1LOCh. 13.4 - Explain the relationship between frequency of...Ch. 13.4 - Prob. 3LOCh. 13.5 - Prob. 1LOCh. 13.5 - Prob. 2LO
Ch. 13.5 - Prob. 3LOCh. 13 - Inquiry question Mendel did not examine plant...Ch. 13 - What would Mendel have observed in a dihybrid...Ch. 13 - Prob. 2DACh. 13 - Why is the white-eye phenotype always observed in...Ch. 13 - In an organisms genome, autosomes are a. the...Ch. 13 - What cellular process is responsible for genetic...Ch. 13 - The map distance between two genes is determined...Ch. 13 - How many map units separate two alleles if the...Ch. 13 - How does maternal inheritance of mitochondrial...Ch. 13 - Which of the following genotypes due to...Ch. 13 - Prob. 1ACh. 13 - As real genetic distance increases, the distance...Ch. 13 - Down syndrome is the result of trisomy for...Ch. 13 - Genes that are on the same chromosome can show...Ch. 13 - The A and B genes are 10 cM apart on a chromosome....Ch. 13 - Prob. 6ACh. 13 - Color blindness is caused by a sex-linked,...Ch. 13 - Assume that the genes for seed color and seed...Ch. 13 - A low frequency of calico cats are male (about...
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- Explain the purpose and result of meiosis AND describe the necessity of the reduction of the chromosome number and how it is achieved in meiosis.arrow_forwardRelate the characteristics of the Y chromosomearrow_forwardRepresent the segregation of chromosomes during Meiosis 1 and Meiosis 2 in both male and female.arrow_forward
- Explain the genetic consequences of chromosomal configuration at different stages of meiosis.arrow_forwardWhat are sex chromosomes ? Explain the importance of sex chromosomes ?arrow_forwardDuring meiosis in male mammals, sex chromosomes segregate to produce two types of sperm: X‑bearing sperm and Y‑bearing sperm. True or false?arrow_forward
- What are sex chromosomes?arrow_forwardExplain why nondisjunction of sex chromosomes is more well-tolerated thannondisjunction in autosomes, even though genetic nondisjunction of sex chromosomes usually results in sterility and abnormalities of sex organs.arrow_forwardExplain the significance of events occurring in each phase of meiosis.arrow_forward
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