WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 8, Problem 8SA
Summary Introduction
To analyze:
Why crossing over is considered an important event in evolution.
Introduction:
Crossing over involves the swapping of fragments of chromosomes.
Expert Solution & Answer
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Students have asked these similar questions
What is chromosomal theory of inheritance? List the ways in which genes and chromosomes behave similarly during meiosis and fertilization.
How is sex determined in humans? Which sex determines the sex of the offspring?
What are the two types of mutations?
What are the four types of changes in chromosomal structure?
Why would you expect a monosomy to be more lethal than a trisomy?
As pointed out in the section Evolution of the Y Chromosome, some researchers have predicted that the human Y chromosome will continue to lose genetic information in the future and will completely disappear from the species in about 10 million years. What would happen if the Y chromosome disappeared from the human species?
How is it possible for humans to differ genetically from each other if we all have the
same genes arranged in the same order on our chromosomes?
Chapter 8 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- After genetic selection, some originally diploid species can become triploid, like for example some banana trees, grapevines and molluscs. These organisms are mostly sterile because they produce nearly no gametes. a) Make a drawing showing the chomosomes of a triploid cell where n = 2. b) Make a diagram showing how a triploid individual can be produced.arrow_forwardWhy is the term “crossing-over” appropriate for the exchange of DNA segments between homologous chromosomes?arrow_forwardHow does the diploid condition protect harmful recessive alleles from natural selection?arrow_forward
- Among different species, does extranuclear inheritance always follow a maternal inheritance pattern? Why or why not?arrow_forwardThe horse (Equus caballus) has 32 pairs of chromosomes, whereas the donkey (Equus asinus) has 31 pairs of chromosomes. How many total chromosomes would be expected in the somatic tissue of a mule, which is a hybrid of these two animals? Hint: a hybrid donkey is created by the union of a normal gamete from a horse and a normal gamete from a donkey. Group of answer choices 31.5 62 126 none of these is correct 63arrow_forwardIn mammals, more than one chiasma per chromosome arm is an indication that crossing-over has occurred. Scientists compared the average number of chiasma among the species shown in the table. Based on the data, which of the following questions could be asked to determine how the genetic diversity of these mammals would be affected in future generations? A - Are baboons or dogs more genetically diverse? B - Are horses more genetically diverse than other mammals? C - Are baboons less genetically diverse than other mammals? D - Do horses and cats express a comparable amount of genetic variation?arrow_forward
- What are linkage and recombination of chromosomal theory of inheritence?arrow_forwardYou are an allele on a single uncondensed chromosome in a Yellowfever-carrying mosquito (Aedes aegypti) diploid cell (2n = 6). Demonstrate in as much detail as possible (1) how you will get to each genetically identical diploid cell of the multicellular offspring; (2) how you will get to the next generation of sexually reproduced progeny. Help, I no understand. Perhaps you will?arrow_forwardOne of the earliest postzygotic barriers to arise is hybrid sterility. Two plants can be crossed, but the resulting seeds grow into sterile plants that cannot reproduce. Is this as important in plants as it is in animals (Hint: How many types of hybrid flowers and fruits are there, compared to hybrid animals)?arrow_forward
- Let’s suppose a genetic disease is caused by a mutantallele. If two affected parents produce an unaffected offspring, can themutant allele be recessive?arrow_forwardSuppose genetic analysis reveals a serious mutation in a gene in the green region of the left-hand copy of chromosome 9 in this individual. Where would you go look for another allele of this gene in this individual to see whether this individual is homozygous or heterozygous for this mutation?arrow_forwardCan single-celled organisms have multiple simultaneous phenotypes? If so, can you propose an example? If not, why?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305389892/9781305389892_smallCoverImage.gif)
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License