Draw a pair of homologous chromosomes and assign 7 genes along their length. Using your chromosomes...
Draw a pair of homologous chromosomes and assign 7 genes along their length.
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- Using your chromosomes above draw an intercalary deletion
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- Draw your homologous chromosomes undergoing unequal crossing over.
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- What mutations occur as a result of unequal crossing over?
Homework Answers
unequal crossing over
may leads to mutations like deletion, addition etc.
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Draw a pair of homologous chromosomes and assign 7 genes along
their length.
Using your chromosomes...
4. Draw homologous chromosomes after S phase. Assign two genes to these chromosomes. a. Draw &...
4. Draw homologous chromosomes after S phase. Assign two genes to these chromosomes. a. Draw & clearly label what happens to these homologous chromosomes during anaphase I & at the end of telophase I (include the gene labels). b. Draw & clearly label what happens to these chromosomes during anaphase II & at the end of telophase II (include the gene labels). c. Did these two genes assort independently?
Homologous chromosomes pair along their length during prophase 1 of meiosis.
Question 36 Homologous chromosomes pair along their length during prophase 1 of meiosis. While two homologues are paired, genetic exchange may occur between them in a process called _______ syngamy nondisjunction independent assortment crossing over Question 37 At the end of meiosis II, there are _______ 2 haploid daughter cells that are genetically different 4 haploid daughter cells that are genetically identical 4 haploid daughter cells that are genetically different 2 diploid daughter cells that are genetically identical 4 diploid daughter cells that are genetically differentQuestion 38 When do homologous chromosomes separate from...
1. Crossing over is important because it _____. a. allows the exchange of genes between homologous...
1. Crossing over is important because it _____. a. allows the exchange of genes between homologous chromosomes b. prevents variation in gametes c. holds tetrads together d. ensures that homologous chromosomes pair up 2. The M phase of mitosis and M phase of meiosis both occur after interphase. However, the two processes differ in the arrangement and behavior of their chromosomes. How? a. Homologous chromosomes pair up in mitosis, but not in meiosis. b. The pairing up of homologous chromosomes...
Has the homologous pair of chromosomes pictured to the right undergone crossing over? Explain your answer...
Has the homologous pair of chromosomes pictured to the right undergone crossing over? Explain your answer either way.
Simulate meiosis by drawing One pair of chromosomes and no crossing over Instructions: Set up your...
Simulate meiosis by drawing One pair of chromosomes and no crossing over Instructions: Set up your cell. The cell you start with should be: A diploid cell It should contain 1 pair of homologous chromosomes It should be in G1 of the cell cycle, before DNA replication occurs Be sure to show 2 genes that are both heterozygous . Go through the steps of meiosis. Be sure to show and label these in your pictures: Label homologous chromosomes and sister...
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of...
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of one chromosome from the butterfly's mother and one from its father. A. Assuming no crossing over, what is the probability that a sperm this butterfly makes has all of the chromosomes from the butterfly's own father? Why? (You do not need to calculate out this number- a number with an exponent is fine.) (roughly 3-4 sentences) B. How many chromosome 17's does this butterfly...
1. Draw TWO PAIRS of metacentric homologous chromosomes as they would appear, if they could be...
1. Draw TWO PAIRS of metacentric homologous chromosomes as they would appear, if they could be seen, during of the cell cycle. Indicate centromeres with a small circle. For one pair of homologs, place the allele on one chromosome and the allele a on the other chromosome. For the other pair of homologs place the allele on one chromosome and the alleleb on the other chromosome. 2. Draw the same chromosomes as they would appear at the end of prophase...
Simulate meiosis by drawing Two pairs of chromosomes with crossing over Assume that two of the...
Simulate meiosis by drawing Two pairs of chromosomes with crossing over Assume that two of the genes are on chromosome 1, and one of the genes is on chromosome 2. Allow crossing over to occur between the two genes on the same chromosome. Also, are there multiple ways that the chromosomes could segregate to produce different results? Show them. Instructions: Set up your cell. The cell you start with should be: A diploid cell It should contain 2 pairs of...
Biff is the son of Willy and Linda Loman. Willy is of genotype AABBCC and Linda...
Biff is the son of Willy and Linda Loman. Willy is of genotype
AABBCC and Linda is aabbCC. These three particular genes (“A/a”,
“B/b”, and “C/c”) are located on the same chromosome.
a) What must Biff’s genotype be?
b) For these three genes, draw the arrangement
of alleles on Biff’s pair of homologous chromosomes, below. Based
on the information given above, you do not know for certain what
order the genes are in along the chromosome, but you do know...
2a. Draw a pair of homologous chromosomes as they would be matched during prophase I if...
2a. Draw a pair of homologous chromosomes as they would be matched during prophase I if they had a paracentric inversion. (be sure to give yourself plenty of space so drawing is clear) Let the original gene order on these chromosomes be: L, M, N, centromere, O, P, Q, R, S, T. Let one of the chromosomes contain an inversion that includes P, Q, and R. Remember that the chromosomes are duplicated at this time, and thus contain sister chromatids....
4. Draw homologous chromosomes after S phase. Assign two genes to these chromosomes. a. Draw & clearly label what happens to these homologous chromosomes during anaphase I & at the end of telophase I (include the gene labels). b. Draw & clearly label what happens to these chromosomes during anaphase II & at the end of telophase II (include the gene labels). c. Did these two genes assort independently?
Has the homologous pair of chromosomes pictured to the right undergone crossing over? Explain your answer either way.
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of one chromosome from the butterfly's mother and one from its father. A. Assuming no crossing over, what is the probability that a sperm this butterfly makes has all of the chromosomes from the butterfly's own father? Why? (You do not need to calculate out this number- a number with an exponent is fine.) (roughly 3-4 sentences) B. How many chromosome 17's does this butterfly...
1. Draw TWO PAIRS of metacentric homologous chromosomes as they would appear, if they could be seen, during of the cell cycle. Indicate centromeres with a small circle. For one pair of homologs, place the allele on one chromosome and the allele a on the other chromosome. For the other pair of homologs place the allele on one chromosome and the alleleb on the other chromosome. 2. Draw the same chromosomes as they would appear at the end of prophase...
Biff is the son of Willy and Linda Loman. Willy is of genotype
AABBCC and Linda is aabbCC. These three particular genes (“A/a”,
“B/b”, and “C/c”) are located on the same chromosome.
a) What must Biff’s genotype be?
b) For these three genes, draw the arrangement
of alleles on Biff’s pair of homologous chromosomes, below. Based
on the information given above, you do not know for certain what
order the genes are in along the chromosome, but you do know...
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