Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation? Top of Form Selective breeding Chromosomal mutations Recombination Genetic drift

Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation? Top of Form Selective breeding Chromosomal mutations Recombination Genetic drift

Name: Over the last several decades, the scientific community has gathered a
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Description: Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation? Top of Form Selective breeding Chromosomal m

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter13: An Introduction To Genetic Technology

Section: Chapter Questions

Problem 3CS

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A beneficial dominant mutation is expected to take fewer generations to reach high frequency than a beneficial recessive mutation at the same locus in the same population, assuming neither mutation is lost to genetic drift. True False Which of the following statements is true of recombination? Recombination reshuffles alleles between maternal and paternal chromosomes, but not does produce new alleles. Recombination can produce new alleles by crossing over between maternal and paternal chromosomes. Recombination is more likely between loci that are near each other on a chromosome. Recombination occurring between loci on non-homologous chromosomes results in linkage equilibrium. Recombination occurring between loci on non-homologous chromosomes results in linkage disequilibrium.
Hereditary genetics Population genetics Molecular genetics Answer Bank expressing exogenous transgenes to understand function calculating genotype frequencies to understand phenotype changes in a population researching how genetic drift impacted many species over the past thousand years observing phenotypes in offspring to understand gene inheritance studying DNA-protein interactions to understand gene regulation tracing pedigrees to determine patterns of gene transmission within a family
Which of the following is a change in the structure of a gene resulting in a variant that can be transferred to subsequent generations? mutation gene flow trisomy genetic drift
Improving the nutritional value of food has long been one of the goals in agricultural genetics. Crossing different strains of plants and animals followed by generations of artificial selection have yielded some successes, including the development of high-protein maize. The use of gene transfer biotechnology has led to other advances, including the creation of nutritionally enhanced rice to combat vitamin A deficiency and blindness. Researchers are now turning their attention to the nutritional enhancement of animals that are used as food. Scientists are now turning their attention to using gene transfer technology to nutritionally enhance animal foods. Recently, biotechnology was used to produce a sheep with increased amounts of an omega-3 essential fatty acid that plays an important role in the development of the nervous system and, in adults, reduces the risk of coronary artery disease. Once a small number of transgenic animals have been produced, they can be bred by conventional methods to establish a source of nutritionally enhanced meat and milk. The use of biotechnology is presenting consumers with many new choices, which will become more common in the future. Increasingly, we will all have to educate ourselves about the pros and cons of such decisions. On the other hand, how would you explain your preference for meat from animals without higher levels of beneficial fatty acids?
Improving the nutritional value of food has long been one of the goals in agricultural genetics. Crossing different strains of plants and animals followed by generations of artificial selection have yielded some successes, including the development of high-protein maize. The use of gene transfer biotechnology has led to other advances, including the creation of nutritionally enhanced rice to combat vitamin A deficiency and blindness. Researchers are now turning their attention to the nutritional enhancement of animals that are used as food. Scientists are now turning their attention to using gene transfer technology to nutritionally enhance animal foods. Recently, biotechnology was used to produce a sheep with increased amounts of an omega-3 essential fatty acid that plays an important role in the development of the nervous system and, in adults, reduces the risk of coronary artery disease. Once a small number of transgenic animals have been produced, they can be bred by conventional methods to establish a source of nutritionally enhanced meat and milk. The use of biotechnology is presenting consumers with many new choices, which will become more common in the future. Increasingly, we will all have to educate ourselves about the pros and cons of such decisions. How would you explain your decision to eat nutritionally enhanced meat from animals modified by biotechnology?
Which one of the following options most accurately describes the process that generates the signature of a selective sweep in DNA sequence data? suppression of mutation over a long haplotype centered on a positively selected allele genetic hitchhiking of neutral alleles flanking the favored allele at the nucleotide site under positive selection O higher than average recombination around the core allele under positive selection
Which of the following statements about recombination frequency is accurate? Recombination frequency is the physical distance between genes in units of base pairs. Recombination frequency is calculated by comparing the mutation rates of two organisms. Recombination frequency is the defining characteristic of an organism's mutation rate. O Recombination frequency is lower when genes are closer together.
When comparing genomes from 2 different organisms, "regions of synteny" refers to...• Whether the number of chromosomes is similar• blocks of sequence where the same genes are present in the same order• Alleles that are inherited together without following the Law of Independent Assortment• Segments that contain genes present in one organism but absent in the other• Regions with 100% sequence similarity
Consider a recessive condition where 40% of the affected individuals pass away by the age of 10 but those that survive to adulthood are just as likely to have children as the general population. What must the new mutation rate be if the incidence of the disorder is 1/10,000 to maintain a consistent incidence across generations? Answer format: Fraction - #/#
Many animals have the p53 gene that makes a protein that regulates the cell cycle and helps prevent the formation of cancer cells. The table below shows the percentage of p53 gene sequences that the 4 species have when compared to humans. Species Percentage of p53 Gene Sequence Similar to Human Human 100 Horse 60.7 Fruit Fly 15.5 Rat 76.8 Pig 81.3 Which organism in the table is most closely related to humans based on this data? pig horse fruit fly rat 0 0 0 0
What does it mean when an individual is found to be “homozygous” at a DNA profiling locus? They have three alleles at the locus They got different alleles from their mother and father They got the same alleles from their mother and father Their children got two alleles from them Their children got no alleles from them
To understand this research, you must be familiar with some basic genetic terminology. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. dominant allele phenotype The possession of two different alleles of a particular gene is referred to as Reset Help A variation in a DNA sequence at one particular position is called a heterozygosity genotype recessive allele homozygosity single nucleotide polymorphism The appearance of the organism, its observable traits, are referred to as the A variant of a gene for which an individual must be homozygous in order for it to influence the appearance of the organism is a The set of alleles an organism has for a particular trait is the organism's Submit Request Answer