Homework Answers
From the given information it is observed that -
a) The recombination rate between loci will be calculated from the formula
Recombination Rate = no.of recombinant progeny/ total of progeny x 100%
Recombination rate between E and F locus = 11+2/ 100 x 100% = 14%
Recombination rate between D and E locus = 11+2/ 100 x 100% = 13%
Recombination rate between D and F locus = 11+35/ 100 x 100% = 46%
b) The gene that is in the midle is the E.
c) Following is the recombination pattern that lead to teh DEF gamete
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An individual with two homologous chromosomes with genotypes DeF and dEf generates the following 100 egg...
1. Represent all chromosomes in a 2n = 4 cell before replication. Number the homologous chromosomes...
1. Represent all chromosomes in a 2n = 4 cell before replication. Number the homologous chromosomes as you would in a karyotype (e.g., Chromosome 1, Chromosome 2). 2. Gene F is on Chromosome 1 and gene G is on Chromosome 2. This cell carries two different alleles of gene F (called F and f), and two different alleles of gene G (called G and g). Label these alleles on the unreplicated chromosomes that you drew above. 3. In the space...
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...
The following figure shows a cell containing a pair of homologous chromosomes. The alleles for the...
The following figure shows a cell containing a pair of
homologous chromosomes. The alleles for the F gene are indicated on
each chromosome. Which of the following most accurately represents
the configuration of chromosomes within the cell following DNA
replication, prior to meiosis?
Select one:
a.
b.
c.
d.
Which term is used to describe a pair of similar chromosomes in
a cell:
Select one:
a. bifurcates
b. homologous
c. chromatids
d. replicants
Which of the following statements is TRUE...
can someone please help me with this ? Practice Using a Punnett Square. Punnett Squares are...
can someone please help me with this ?
Practice Using a Punnett Square. Punnett Squares are tools to identify outcomes known genotypes. They can be used to help infer probabilities of genotypes and from a particular cross. of possible crosses between individuals of phenotypes amongst offspring lele forms "A" and "a". A woman is heterozygous, so she can produce eggs with Consider a gene with all 9. and Write them across the top of the Punnett Square below the following...
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...
question b-f please thank you 12:52 PM Mon Apr 13 78% B06 Draw a diagram to...
question b-f please thank you
12:52 PM Mon Apr 13 78% B06 Draw a diagram to represent the equational division of meiosis for a diploid organism with three heterologous chromosomes. One acrocentric, one metacentric and one telocentric. The diagram should show the chromosomes as you'd expect to see them during metaphase. The organism is trihybrid and heterozygous for dominant and recessive alleles at three different loci. Locus A is on the telocentric chromosome. Locus B is on the metacentric chromosome....
Instructions Below is a picture of George's chromosomes (a hypothetical example). They show his genotypes for...
Instructions Below is a picture of George's chromosomes (a hypothetical example). They show his genotypes for Cystic Fibrosis (Cc), ear attachment (ee), tongue rolling (Tt), and polydactyly (Pp) Mand Drepresents the chromosomes he inherited from Mom and Dad, and the number indicates which chromosome the genes for the above traits are on. Chromosome 1 Chromosome 2 Chromosome 3 M3 D3 M1 D1 M2 D2 T It C P p e In the following activity you will draw pictures of George's...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and and how many chromosomes will they contain? A) 4 cells, each with 20 chromosomes B) 4 cells, each with 10 chromosomes C) 2 cells, each with 10 chromosomes D) 2 cells, each with 20 chromosomes Answer: 13) Crossing over occurs during which stage of meiosis? A) telophase I B) metaphase II C) anaphase II D) prophase II E) prophase I Answer: 14) Which of...
3) The diploid cells of A. roksiki have a total of 4 chromosomes (2n=4). One of...
3) The diploid cells of A. roksiki have a total of 4 chromosomes (2n=4). One of the homologous pairs is large with an acrocentric centromere and the other is small with a metacentric centromere. A. Draw the chromosomes from A. roksiki as they would appear in metaphase 2 of meiosis. Include all cells and all chromosomes. Assume meiosis is proceeding normally and ignore any effects of crossing over. (6 pts) B. A strain of A. roksiki is heterozygous for a...
Crossing over refers to the exchange of genetic material between two homologous chromosomes. Which of the...
Crossing over refers to the exchange of genetic material between two homologous chromosomes. Which of the following statements about this event is correct? a. Crossing over is more likely to occur between two genes that are widely separated on the chromosomes. b. Crossing over is more likely to occur with recessive alleles than with dominant ones. c. Crossing over is more likely to occur between two genes that occur next to each other on a chromosome. d. Both the first...
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...
The following figure shows a cell containing a pair of
homologous chromosomes. The alleles for the F gene are indicated on
each chromosome. Which of the following most accurately represents
the configuration of chromosomes within the cell following DNA
replication, prior to meiosis?
Select one:
a.
b.
c.
d.
Which term is used to describe a pair of similar chromosomes in
a cell:
Select one:
a. bifurcates
b. homologous
c. chromatids
d. replicants
Which of the following statements is TRUE...
can someone please help me with this ?
Practice Using a Punnett Square. Punnett Squares are tools to identify outcomes known genotypes. They can be used to help infer probabilities of genotypes and from a particular cross. of possible crosses between individuals of phenotypes amongst offspring lele forms "A" and "a". A woman is heterozygous, so she can produce eggs with Consider a gene with all 9. and Write them across the top of the Punnett Square below the following...
question b-f please thank you
12:52 PM Mon Apr 13 78% B06 Draw a diagram to represent the equational division of meiosis for a diploid organism with three heterologous chromosomes. One acrocentric, one metacentric and one telocentric. The diagram should show the chromosomes as you'd expect to see them during metaphase. The organism is trihybrid and heterozygous for dominant and recessive alleles at three different loci. Locus A is on the telocentric chromosome. Locus B is on the metacentric chromosome....
Instructions Below is a picture of George's chromosomes (a hypothetical example). They show his genotypes for Cystic Fibrosis (Cc), ear attachment (ee), tongue rolling (Tt), and polydactyly (Pp) Mand Drepresents the chromosomes he inherited from Mom and Dad, and the number indicates which chromosome the genes for the above traits are on. Chromosome 1 Chromosome 2 Chromosome 3 M3 D3 M1 D1 M2 D2 T It C P p e In the following activity you will draw pictures of George's...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and and how many chromosomes will they contain? A) 4 cells, each with 20 chromosomes B) 4 cells, each with 10 chromosomes C) 2 cells, each with 10 chromosomes D) 2 cells, each with 20 chromosomes Answer: 13) Crossing over occurs during which stage of meiosis? A) telophase I B) metaphase II C) anaphase II D) prophase II E) prophase I Answer: 14) Which of...
3) The diploid cells of A. roksiki have a total of 4 chromosomes (2n=4). One of the homologous pairs is large with an acrocentric centromere and the other is small with a metacentric centromere. A. Draw the chromosomes from A. roksiki as they would appear in metaphase 2 of meiosis. Include all cells and all chromosomes. Assume meiosis is proceeding normally and ignore any effects of crossing over. (6 pts) B. A strain of A. roksiki is heterozygous for a...
Crossing over refers to the exchange of genetic material between two homologous chromosomes. Which of the following statements about this event is correct? a. Crossing over is more likely to occur between two genes that are widely separated on the chromosomes. b. Crossing over is more likely to occur with recessive alleles than with dominant ones. c. Crossing over is more likely to occur between two genes that occur next to each other on a chromosome. d. Both the first...
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