Answered: Analyze the results of Morgan’s…

Analyze the results of Morgan’s experiment, which showedthat a gene affecting eye color in fruit flies is located on theX chromosome.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter8: How Cells Reproduce

Section: Chapter Questions

Problem 3CT

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Embryology

Question

Analyze the results of Morgan’s experiment, which showed
that a gene affecting eye color in fruit flies is located on the
X chromosome.

Expert Solution

Step 1- Introduction

Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms inherit traits from their parents; these traits are determined by the genes. The knowledge from genetics used to know how traits transferred to an offspring and affect them.

Gregor Mendel is known as the father of genetics as he discovered the fundamental unit of inheritance, called a gene. Another scientist, Thomas Hunt Morgan studies fruit flies to confirm the chromosome theory. Morgan discovered the sex-linked inheritance of eye color in fruit flies.

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Similar questions

Morgan and colleges were ultimately able to identify 4 linkage maps in fruit flies. How many pairs of chromosomes do fruit flies have based on those data? 2 8 6 4
Which observation led Thomas Morgan to realize that the gene for fruit fly eye color was located on a sex chromosome? a. He noticed that only male F2 flies could have white eyes; no females displayed this trait. b. He saw that the F2 generation of flies had the classic 3:1 phenotypic ratio of red eyes to white eyes c. He read it in a biology textbook d. He noticed that only mutant flies had white eyes
Give explanation X and Y chromosomes are not homologs, but in meiosis they do pair and segregate in XY organisms to create 50% haploid gametes with an X chromosome and 50% haploid gametes with a Y chromosome. How is pairing achieved? a. Since all other homologous chromosomes pair, the remaining two chromosomes pair by default. b Pairing proteins are capable of binding to different genes on the X and Y chromosomes, which allows them to pair. c. None of the statements is correct. d. They don't actually pair. Random segregation generally ensures the X and Y chromosomes separate. e.Pseudoautosomal regions that are homologous exist at the tips of both the X and Y chromosomes, and they allow pairing.
What finding finally determined that genes were carried on chromosomes?a. heat sensitivity of certain enzymes that determined coat colorb. sex-linked eye color in fruit fliesc. the finding of complete dominanced. establishing pedigrees
Give typing answer with explanation and conclusion
What is the main difference between autopolyploid and allopolyploid? a. the number of chromosomes b. the functionality of the chromosomes c. the source of the extra chromosomes d. the number of mutations in the extra chromosomes
Analyze the experiment of Stern, and explain how it indicated that recombinant offspring carry chromosomes that are the result of crossing over?
who discovered crossing over in fruit fly
Make and defend a claim based on evidence that the process of independent assortment during meiosis leads to genetic variation.
What is the fundamental difference between mitosis and meiosis? A. DNA is replicated twice in meiosis, but only once in mitosis. B. The number of DNA molecules per cell nucleus is cut in half in meiosis but remains constant in mitosis. C. The number of chromosomes doubles in meiosis, whereas it stays the same in mitosis. D. Mitosis involves two cell divisions, whereas meiosis only involves one.
Explain why the recessive white eye gene in male fruit flies can disappear in one generation and show up in another. Use a diagram to explain fully.
How can duplications arise? A. by uneven crossing over during meiotic prophase B. by the loss of a telomere C. by chromosome breakage and exchange of arms D. by spindle failure during chromosome separation