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QUESTION 4 Two genes on the same chromosome exhibit a recombination rater of 0.5. What can...
QUESTION 3 Two genes on the same chromosome exhibit a recombination rate r of 0.3. What...
QUESTION 3 Two genes on the same chromosome exhibit a recombination rate r of 0.3. What can be said about the linkage of these two genes? They are physically linked They are genetically linked They are unlinked They are both physically and genetically linked.
Which of these statements is incorrect? Syntenic genes are located on the same chromosome. Independent assortment...
Which of these statements is incorrect? Syntenic genes are located on the same chromosome. Independent assortment results in recombinant chromosomes. You can reliably predict the relative genetic distance from genes’ physical distance on a chromosome. Linked genes are always syntenic. What is the relative genetic distance between two linked genes if the recombination frequency is 0.49? 0.49 cM 4.9 cM 49 cM 490 cM What statement best explains the distortion in Mendelian ratios observed by Bateson & Punnett in 1905?...
1. 2. 13. Which statement explains why the recombination frequency between two genes is always less...
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2.
13.
Which statement explains why the recombination frequency between two genes is always less than 50%? Recombination cannot be more than 50% because chromosomes are only 50 map units in length. The genotype of the F, gametes will always be 50% parental gametes and 50% recombinant gametes. Genes with a recombination frequency near 50% are unlinked and have an equal likelihood of being inherited together or separately. F1 gametes always have 50% of their alleles from each parental...
Linkage: Consider three genes, each with two alleles. An individual with genotype AAbbDD is crossed with...
Linkage: Consider three genes, each with two alleles. An individual with genotype AAbbDD is crossed with an individual whose genotype is aaBBdd. What are all the gamete types (gamete genotypes) that their offspring (AaBbDd) can produce? Draw chromosome diagrams if it helps you to answer the question. a. If the three genes are unlinked? b. If all three links are tightly linked (no crossing over)? c. If the first two genes are tightly linked (no crossing over), but the third...
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...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He found that alleles that are not genetically linked, can still be on the same chromosome. Alleles A and Z are not genetically linked (recombination frequency is 50%) If the recombination frequency between different alleles are: AZ: 50% G-Z: 50% A-G: 8% T-D: 24% G-T: 39% TZ: 50% A-T: 47% DZ: 25% A. Are A and Z on the same chromosome? Why or why not?...
When determining map distance between two genes that are far apart on the same chromosome, it...
When determining map distance between two genes that are far apart on the same chromosome, it is most accurate to add up the recombination frequencies of genes between the two outside genes because The recombination frequency between the two outside genes will be an over-estimate of the actual distance due to double cross-overs By adding up the smaller distances you can account for MANY of the double cross-overs that occurred between the two closest genes. By adding up the smaller...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can you exclude? That the genes are located close together on the same chromosome That the genes are on different chromosomes O That the genes are assorting independently That the genes are located on the same chromosome, but very far apart Meiosis contributes to genetic diversity by: o Reducing the number of chromosomes for karyogamy (fusion of nuclei) with another gamete O Recombining homologous chromosomes...
Question 2 Genes a and b are linked, with 20% recombination frequency. Two pure breeding strains...
Question 2 Genes a and b are linked, with 20% recombination frequency. Two pure breeding strains (the parental cross) were crossed. The F1 was then testcrossed. a+b-/a-b+ x a-b-/a-b- What were the parental strains genotypes? b. What would be the genotypes and the probability of each, among progeny of the testcross? Example: a+b+/a-b- 45% c. Is this an example of cis- or trans-linkage?
Question 20 3 pts recombination frequency Two linked genes that are close together usually have a...
Question 20 3 pts recombination frequency Two linked genes that are close together usually have a than two linked genes that are further apart. Question 21 3 pts DNA polymerase Ill requires to build something before it can begin replicating. 3 pts Question 22 mutations in a gene always results in a new stop codon in the transcribed mRNA
QUESTION 3 Two genes on the same chromosome exhibit a recombination rate r of 0.3. What can be said about the linkage of these two genes? They are physically linked They are genetically linked They are unlinked They are both physically and genetically linked.
1.
2.
13.
Which statement explains why the recombination frequency between two genes is always less than 50%? Recombination cannot be more than 50% because chromosomes are only 50 map units in length. The genotype of the F, gametes will always be 50% parental gametes and 50% recombinant gametes. Genes with a recombination frequency near 50% are unlinked and have an equal likelihood of being inherited together or separately. F1 gametes always have 50% of their alleles from each parental...
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...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He found that alleles that are not genetically linked, can still be on the same chromosome. Alleles A and Z are not genetically linked (recombination frequency is 50%) If the recombination frequency between different alleles are: AZ: 50% G-Z: 50% A-G: 8% T-D: 24% G-T: 39% TZ: 50% A-T: 47% DZ: 25% A. Are A and Z on the same chromosome? Why or why not?...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can you exclude? That the genes are located close together on the same chromosome That the genes are on different chromosomes O That the genes are assorting independently That the genes are located on the same chromosome, but very far apart Meiosis contributes to genetic diversity by: o Reducing the number of chromosomes for karyogamy (fusion of nuclei) with another gamete O Recombining homologous chromosomes...
Question 20 3 pts recombination frequency Two linked genes that are close together usually have a than two linked genes that are further apart. Question 21 3 pts DNA polymerase Ill requires to build something before it can begin replicating. 3 pts Question 22 mutations in a gene always results in a new stop codon in the transcribed mRNA
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