Homework Answers
Genotypes of 4 gametes are 1. hI
2.hI
3.Hi
4.Hi
Gametes 1 and 4 mentioned here are formed from recombination of 1st and 4th Chromatid.
Gametes 2 and 3 mentioned here are formed from recombination of 2nd and 3rd Chromatid.
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genetics
A four-strand double crossover (crossover between chromatids 1 & 4 and 2 & 3) between...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
7. INDICATE IF TRUE OR FALSE 1. Synapsis usually forms between nonsister chromatids. 2. The centrioles...
7. INDICATE IF TRUE OR FALSE 1. Synapsis usually forms between nonsister chromatids. 2. The centrioles are highly conserved chromosome regions that interact with spindle fibers during cell division 3. Homologous chromosomes are held together in prophase I of meiosis only by crossover recombination between them. 4. Cohesin complex at the centromere keeps sister chromatids together until anaphase in both mitosis and meiosis II but not in the first meiotic division. 5. Translocation of the SRY gene from the Y...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure...
Advanced Genetics Problem: Yeast chromosome 3 has these genes in this order: HIS4 LYS1 URA3 ADE2....
Advanced Genetics
Problem:
Yeast chromosome 3 has these genes in this order: HIS4 LYS1 URA3
ADE2. You have created a diploid strain of this genotype:
You sporulate the diploid and analyze tetrads. Most tetrads show
2:2 segregation for all markers and recombination frequencies that
are consistent with the established genetic map. However, you
notice the one strange tetrad indicated below:
Your goal is to explain how the genotypes of this tetrad arose
during meiosis:
a. Do these spores indicate that...
Genetics: include pictures please.(: For each of the following steps of recombination at the molecular level,...
Genetics: include pictures please.(:
For each of the following steps of recombination at the molecular level, briefly describe what is happening and draw out what the chromatids look like (just the DNA, don't need to draw out the proteins), and what proteins are involved in each step. 1. Double strand break formation 2. Resection 3. First strand invasion 4. Formation of the double Holliday junction 5. Branch migration 6. Resolution
//////////// Calculate the double crossover interference value ////////// 2. A general genetics class is asked to...
//////////// Calculate the double crossover interference value
//////////
2. A general genetics class is asked to study three traits (all controlled by single genes with complete dominance) in a population of mice - coat color (black (w) white (w)), eye color (brown (b) - blue (b)) and tail shape (straight (k) - kinked (k)). Assuming the genes are linked use the following data to determine the linkage distance between the genes and the gene order. Be sure to correct for...
Required information The recombination frequency between genes that are located on different chromosomes is 50%, a...
Required information The recombination frequency between genes that are located on different chromosomes is 50%, a hallmark of independent assortment. Genes that are located close together on the same chromosome have a recombination frequency less than 50%, which is an indication of linkage. Complete the following questions to investigate recombination frequency between genes that are far apart on the same chromosome. Two genes on the same chromosome may have no crossover (NCO), a single crossover (SCO), or a double crossover...
Drosophila Genetics predictions exercise-L113 (25 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use...
Drosophila Genetics predictions exercise-L113 (25 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure all...
1. Consider a fungal cross A B X a b where the gene are linked. In...
1. Consider a fungal cross A B X a b where the gene are linked. In a meiosis where there occurs a four-strand double crossover between the A and B genes, what is the percentage of meiotic products in that ascus that will be recombinant for the two genes 2.For a heterozygote A/a, what is the stage of meiosis I that forms chromosomal basis for the segregation of alleles (A and a)? 3.For heterozygote A/a, what is the chromosomal event...
1. A genetic cross in which the inheritance of two traits is observed is called a...
1. A genetic cross in which the inheritance of two traits is observed is called a A) Dihybrid cross. B) Monohybrid cross C) Backeross D) Testcross 2. For single crossovers, the frequency of recombinant gametes is half the frequency of crossing over because A) A testeross between a homozygous and heterozygote produces 1/2 heterozygous and 1/2 homozygous progeny. B) The frequency of recombination is always 50%. C) Each crossover takes place between only two of the four chromatids of a...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
7. INDICATE IF TRUE OR FALSE 1. Synapsis usually forms between nonsister chromatids. 2. The centrioles are highly conserved chromosome regions that interact with spindle fibers during cell division 3. Homologous chromosomes are held together in prophase I of meiosis only by crossover recombination between them. 4. Cohesin complex at the centromere keeps sister chromatids together until anaphase in both mitosis and meiosis II but not in the first meiotic division. 5. Translocation of the SRY gene from the Y...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure...
Advanced Genetics
Problem:
Yeast chromosome 3 has these genes in this order: HIS4 LYS1 URA3
ADE2. You have created a diploid strain of this genotype:
You sporulate the diploid and analyze tetrads. Most tetrads show
2:2 segregation for all markers and recombination frequencies that
are consistent with the established genetic map. However, you
notice the one strange tetrad indicated below:
Your goal is to explain how the genotypes of this tetrad arose
during meiosis:
a. Do these spores indicate that...
Genetics: include pictures please.(:
For each of the following steps of recombination at the molecular level, briefly describe what is happening and draw out what the chromatids look like (just the DNA, don't need to draw out the proteins), and what proteins are involved in each step. 1. Double strand break formation 2. Resection 3. First strand invasion 4. Formation of the double Holliday junction 5. Branch migration 6. Resolution
//////////// Calculate the double crossover interference value
//////////
2. A general genetics class is asked to study three traits (all controlled by single genes with complete dominance) in a population of mice - coat color (black (w) white (w)), eye color (brown (b) - blue (b)) and tail shape (straight (k) - kinked (k)). Assuming the genes are linked use the following data to determine the linkage distance between the genes and the gene order. Be sure to correct for...
Required information The recombination frequency between genes that are located on different chromosomes is 50%, a hallmark of independent assortment. Genes that are located close together on the same chromosome have a recombination frequency less than 50%, which is an indication of linkage. Complete the following questions to investigate recombination frequency between genes that are far apart on the same chromosome. Two genes on the same chromosome may have no crossover (NCO), a single crossover (SCO), or a double crossover...
Drosophila Genetics predictions exercise-L113 (25 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure all...
1. A genetic cross in which the inheritance of two traits is observed is called a A) Dihybrid cross. B) Monohybrid cross C) Backeross D) Testcross 2. For single crossovers, the frequency of recombinant gametes is half the frequency of crossing over because A) A testeross between a homozygous and heterozygote produces 1/2 heterozygous and 1/2 homozygous progeny. B) The frequency of recombination is always 50%. C) Each crossover takes place between only two of the four chromatids of a...
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