Diagrammatically show the following steps in division of a 2n = 4 cell with 1 autosome,...
Diagrammatically show the following steps in division of a 2n = 4 cell with 1 autosome, and 1 X-chromosome, and 1 Y-chromosome in:
A.) Anaphase I of meiosis
Homework Answers
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information.
Anaphase I is the stage of meiosis where the cell starts to lengthen and the two homologs of each chromosome pair separate and move toward opposite poles, drawn by the microtubules of the spindle apparatus.
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Diagrammatically show the following steps in division of a 2n =
4 cell with 1 autosome,...
2. Draw a 2n = 4 cell with one autosome and one X and one Y...
2. Draw a 2n = 4 cell with one autosome and one X and one Y chromosome during the following stages (5 points): (a) Anaphase 1 of meiosis, such that the X and Y chromosome are undergoing nondisjunction (b) Anaphase 2 of meiosis, such that the autosome is undergoing non-disjunction
Consider the following diagram which depicts a particular anaphase of cell division in an animal. Assume...
Consider the following diagram which depicts a particular anaphase of cell division in an animal. Assume that in this animal there is NO crossing-over, either in mitosis or meiosis! Can you tell for sure whether this is anaphase of mitosis, or anaphase I of meiosis, or anaphase II of meiosis? If so, what is the diploid number of this cell?
What is the diploid number of chromosomes in this plant? _______________ ["2N=4", "N=8", "2N=16", "2N=8", "N=4",...
What is the diploid number of chromosomes in this plant?
_______________ ["2N=4", "N=8", "2N=16", "2N=8", "N=4", "N=16"]
Give the names of each stage of mitosis or meiosis shown in
the:
left panel:
________________ ["anaphase of meiosis I", "metaphase
of meiosis I", "prophase of meiosis II", "metaphase of mitosis",
"telophase of mitosis", "anaphase of meiosis II", "anaphase of
mitosis", "prophase of mitosis", "telophase of meiosis II",
"metaphase of meiosis II", "telophase of meiosis I", "prophase of
meiosis...
5. Draw a 2n=4 cell with one long metacentric (A/a) and one short metacentric (B/b) chromosomee...
5. Draw a 2n=4 cell with one long metacentric (A/a) and one short metacentric (B/b) chromosomee in: a. Anaphase of mitosis (6 nainte! 5. Draw a 2n=4 cell with one long metacentric (A/a) and one short metacentric (B/b) chromosomes in: a. Anaphase of mitosis (6 points) b. Anaphase II of meiosis (6 points) 6. Discuss the roles that the synaptonemal complex and the chiasma play during meiosis. What stage(s) do these structures form? (8 points)
Can someone please check my answer? Understanding chromosome number and behavior during cell division is an...
Can someone please check my answer? Understanding chromosome number and behavior during cell division is an important concept in genetics. Fill out the chart below for each phase of mitosis in terms of N (where N = haploid number). For example, humans have a haploid number of 23. There are 46 chromosomes (2N) present in prophase of mitosis. Each chromosome is present in its replicated form (i.e. as sister chromatids) so there will be 2 chromatids per chromosome and the...
2. Draw a cell where 2n = 6 in each phase of the cell cycle. Use...
2. Draw a cell where 2n = 6 in each phase of the cell cycle. Use a longer chromosome for Chromosome 1 and a medium chromosome for Chromosome 2 and a short chromosome for Chromosome 3 and use two different colors to represent the maternal and paternal chromosomes. Be sure to clearly indicate what is going on with the 1-nuclear envelope, 2-centrosomes, 3-chromosomes in each of the stages. prophase/ prophase 1/ prophase 2 metaphase/ metaphase 1/ metaphase 2 anaphase/ anaphase...
1. An organism is described as 2n = 58. How many chromosomes are in one meiotic...
1. An organism is described as 2n = 58. How many chromosomes are in one meiotic cell during telophase 1? 2. An organism is described as 2n = 58. How many chromatids per chromosome are in one mitotic cell during metaphase? 3. An organism is described as 2n = 58. How many chromatids per chromosome are in one meiotic cell during Anaphase 2? 4. An organism is described as 2n = 58. How many chromatids per chromosome are in one...
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...
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2....
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2. Assume chromosome! is clearly larger than chromosome 2. Each chromosome pair contains a maternal and a paternal member (e.g. 1 and 1 & 2 and 2"). An allele called G is localized to 1" whereas an allele called g is on chromosome 1P. Allele R is localized to 2m whereas alleler is localized to 2. Using these designations and clearly drawn and labeled chromosomes,...
Question 1: a) Match the process and stage to the cell. Assume all cells are from...
Question 1:
a) Match the process and stage to the cell. Assume all cells are
from diploid organisms.
Select one:
☐Mitosis Prophase
☐Mitosis Metaphase
☐Mitosis Anaphase
☐Mitosis Telophase
☐Meiosis Prophase I
☐Meiosis Metaphase I
☐Meiosis Anaphase I
☐Meiosis Telophase I
☐Meiosis Prophase II
☐Meiosis Metaphase II
☐Meiosis Anaphase II
☐Meiosis Telophase II
b) Match the process and stage to the cell. Assume all cells are
from diploid organisms.
Select one:
☐Mitosis Prophase
☐Mitosis Metaphase
☐Mitosis Anaphase
☐Mitosis Telophase
☐Meiosis Prophase...
Consider the following diagram which depicts a particular anaphase of cell division in an animal. Assume that in this animal there is NO crossing-over, either in mitosis or meiosis! Can you tell for sure whether this is anaphase of mitosis, or anaphase I of meiosis, or anaphase II of meiosis? If so, what is the diploid number of this cell?
What is the diploid number of chromosomes in this plant?
_______________ ["2N=4", "N=8", "2N=16", "2N=8", "N=4", "N=16"]
Give the names of each stage of mitosis or meiosis shown in
the:
left panel:
________________ ["anaphase of meiosis I", "metaphase
of meiosis I", "prophase of meiosis II", "metaphase of mitosis",
"telophase of mitosis", "anaphase of meiosis II", "anaphase of
mitosis", "prophase of mitosis", "telophase of meiosis II",
"metaphase of meiosis II", "telophase of meiosis I", "prophase of
meiosis...
5. Draw a 2n=4 cell with one long metacentric (A/a) and one short metacentric (B/b) chromosomee in: a. Anaphase of mitosis (6 nainte! 5. Draw a 2n=4 cell with one long metacentric (A/a) and one short metacentric (B/b) chromosomes in: a. Anaphase of mitosis (6 points) b. Anaphase II of meiosis (6 points) 6. Discuss the roles that the synaptonemal complex and the chiasma play during meiosis. What stage(s) do these structures form? (8 points)
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...
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2. Assume chromosome! is clearly larger than chromosome 2. Each chromosome pair contains a maternal and a paternal member (e.g. 1 and 1 & 2 and 2"). An allele called G is localized to 1" whereas an allele called g is on chromosome 1P. Allele R is localized to 2m whereas alleler is localized to 2. Using these designations and clearly drawn and labeled chromosomes,...
Question 1:
a) Match the process and stage to the cell. Assume all cells are
from diploid organisms.
Select one:
☐Mitosis Prophase
☐Mitosis Metaphase
☐Mitosis Anaphase
☐Mitosis Telophase
☐Meiosis Prophase I
☐Meiosis Metaphase I
☐Meiosis Anaphase I
☐Meiosis Telophase I
☐Meiosis Prophase II
☐Meiosis Metaphase II
☐Meiosis Anaphase II
☐Meiosis Telophase II
b) Match the process and stage to the cell. Assume all cells are
from diploid organisms.
Select one:
☐Mitosis Prophase
☐Mitosis Metaphase
☐Mitosis Anaphase
☐Mitosis Telophase
☐Meiosis Prophase...
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