Homework Answers
B) 2 h H H H
strand 2 initially had double stranded break and marker H from strand 3 enters into strand to to form gene conversion of hHHH
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Use the diagram below of a double Holliday junction between two homologous chromosomes to answer the...
Use the diagram below of a double Holliday junction between two homologous chromosomes to answer the...
Use the diagram below of a double Holliday junction between two homologous chromosomes to answer the following questions. | b Which sites (I, II, III, or IV) will be nicked in order to resolve this double Holliday junction in a way that results in the following four gametes: Ah,b; a,H,b;A,H,B; and a, H,B? a. I and II b. III and IV c. I and III d. I and IV
1. Homologous recombination can happen between non-identical DNA sequences. T/F? 2. Homologous recombination can happen in_______...
1. Homologous recombination can happen between non-identical DNA sequences. T/F? 2. Homologous recombination can happen in_______ a) meiosis b) mitosis c) both 3. Homologous recombination in meiosis has the main purpose of_____ a) DNA repair b) Creating new chromosomes c) Sealing double-stranded breaks 4. Strand invasion usually happens without enzymatic assistance. T/F? 5. When replication fork runs into a nick, it results in a_______ a) single-stranded break b) double-stranded break 6. The invading end is usually a _______ a) 3'...
Part 1 Build a pair of replicated, homologous chromosomes. Use ten beads to create each individual...
Part 1 Build a pair of replicated, homologous chromosomes. Use ten beads to create each individual sister chromatid (20 beads per chromosome pair). Two five-holed beads represent each centromere. To do this: a. Start with 20 beads of the same color to create your first sister chromatid pair. Five beads must be snapped together for each of the four different strands. Two strands create the first chromatid, and two strands create the second chromatid, with a 5-holed bead at the...
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a...
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a single point, but rather two points with a stretch of DNA in between. a. What are the two junction points called? b. What is the region between the two points called and what is different about this region compared to how double-stranded DNA usually is? c. If the region described in b.) is located within a gene and the two homologues have different alleles...
Match the following terms to the correct definition Match the following terms to the correct definition. 1. term used t...
Match the following terms to the correct definition
Match the following terms to the correct definition. 1. term used to describe the double stranded chromosomes present after DNA replication alleles A. cell division that results in the formation of B 4 cells each containing haploid number of chromosomes crossing over division of the cytoplasm type of cell division that results in the formation of 2 daughter cells genetically identical to parent cell pairing of homologous sister chromatids during prophase I...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What are homologous chromosomes? Are they present in all cells? If not, which cells lack homologous chromosomes? Are they present in all stages of mitosis? Are they present in all stages of Meiosis 1? Meiosis II? How do the terms haploid and diploid relate to the presence/absence of homologous chromosomes? What are sister chromatids? During what phase of the cell cycle do sister chromatids form?...
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...
An individual with two homologous chromosomes with genotypes DeF and dEf generates the following 100 egg...
An individual with two homologous chromosomes with genotypes DeF and dEf generates the following 100 egg cells: DeF 35 Def 2 DEF 11 DEf 2 deF 3 def 9 dEF 3 dEf 35 a) What is the recombination rate between the E locus and the F locus? Between D and E? And between D and F? b) Which gene is in the middle? c) Draw the homologous chromosomes, label the alleles, and draw the recombination event(s) that lead to the...
For the following 6 slides, answer these questions a. Are there homologous pairs present? b. What...
For the following 6 slides, answer these questions a. Are there homologous pairs present? b. What is the n (number of different kinds of chromosomes shown)? c. What is the ploidy (do they have identical sister chromatids)? d. How many different genes are highlighted? e. How many different alleles are there? 1. T f F 2. T T t F F 3. B Kii iX G tt tt R R 4. w W B:333 B2 B2 B2 4 f f...
16. Use the following information to answer the questions below. Drosophila (fruit flies) usually have long...
16. Use the following information to answer the questions below. Drosophila (fruit flies) usually have long wings (+) but mutations in two different genes can result in bent wings (bt) or vestigial wings (vg). If a homozygous bent wing fly is mated with a homozygous vestigial wing fly, which of the following offspring would you expect? a. 1/2 bent and vestigial to 1/2 normal b. 1/2 bent and 1/2 vestigial flies c. 3/4 bent to 1/4 vestigial ratio d. all...
Use the diagram below of a double Holliday junction between two homologous chromosomes to answer the following questions. | b Which sites (I, II, III, or IV) will be nicked in order to resolve this double Holliday junction in a way that results in the following four gametes: Ah,b; a,H,b;A,H,B; and a, H,B? a. I and II b. III and IV c. I and III d. I and IV
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a single point, but rather two points with a stretch of DNA in between. a. What are the two junction points called? b. What is the region between the two points called and what is different about this region compared to how double-stranded DNA usually is? c. If the region described in b.) is located within a gene and the two homologues have different alleles...
Match the following terms to the correct definition
Match the following terms to the correct definition. 1. term used to describe the double stranded chromosomes present after DNA replication alleles A. cell division that results in the formation of B 4 cells each containing haploid number of chromosomes crossing over division of the cytoplasm type of cell division that results in the formation of 2 daughter cells genetically identical to parent cell pairing of homologous sister chromatids during prophase I...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What are homologous chromosomes? Are they present in all cells? If not, which cells lack homologous chromosomes? Are they present in all stages of mitosis? Are they present in all stages of Meiosis 1? Meiosis II? How do the terms haploid and diploid relate to the presence/absence of homologous chromosomes? What are sister chromatids? During what phase of the cell cycle do sister chromatids form?...
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...
An individual with two homologous chromosomes with genotypes DeF and dEf generates the following 100 egg cells: DeF 35 Def 2 DEF 11 DEf 2 deF 3 def 9 dEF 3 dEf 35 a) What is the recombination rate between the E locus and the F locus? Between D and E? And between D and F? b) Which gene is in the middle? c) Draw the homologous chromosomes, label the alleles, and draw the recombination event(s) that lead to the...
For the following 6 slides, answer these questions a. Are there homologous pairs present? b. What is the n (number of different kinds of chromosomes shown)? c. What is the ploidy (do they have identical sister chromatids)? d. How many different genes are highlighted? e. How many different alleles are there? 1. T f F 2. T T t F F 3. B Kii iX G tt tt R R 4. w W B:333 B2 B2 B2 4 f f...
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