how does attaching the replicating chromosome to the cell membrane aid in dividing the two chromosomes...
how does attaching the replicating chromosome to the cell membrane aid in dividing the two chromosomes after replication is complete?
Homework Answers
After Replication of chromosome it goes throgh following steps :
Prophase
During S phase, DNA is synthesized. This is the phase where the chromosomes are replicated. After S phase, a chromosome is composed of two identical molecules of DNA, called sister chromatids joined at single centromere.
Nuclear membrane and nucleolus disappear, much condensed chromosomes gets scattered all over the cytoplasm. At this stage spindle formation occur .Bipolar spindles gets extended from both the poles and attach to the centromere of each chromosome called tractile fibres.
Metaphase
During Metaphase chromosomes move towards equator of the cell due to spindle action and lie on a single metaphase plane with chromatids directed towards the poles and centormeres arranged on metaphase plate.
Anaphase
At this stage centrimores of each chromosome split into two identical chromosomes with their centromer.These identical chromosomes move to their respective poles because of repulsion between identical centromeres and contraction of tractile fibres.
Telephase
It is last stages during which two identical groups of chromosomes elongate longitudinally and coil among themselves. Nucleolus and nuclear membrane reappear to form two identical daughter nuclei.
Cytokinesis
After cell division each cell consist of identical chromatin
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how does attaching the replicating chromosome to the cell
membrane aid in dividing the two chromosomes...
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...
1. A human cell has a total of 23 chromosome pairs at the beginning of interphase....
1. A human cell has a total of 23 chromosome pairs at the beginning of interphase. How many total DNA molecules would exist during prophase of that dividing cell? 2. A human cell has a total of 23 chromosome pairs at the beginning of interphase. How many total chromosomes would exist during prophase of that dividing structure? 3. A human cell has a total of 23 chromosome pairs at the beginning of interphase. How many total DNA strands would exist...
4. Telomerases... a) are RNA-containing enzymes involved in replicating the ends of linear chromosomes b) cause...
4. Telomerases... a) are RNA-containing enzymes involved in replicating the ends of linear chromosomes b) cause aging in cells c) are structures located at the ends of eukaryotic chromosomes d) are needed by bacteria to complete synthesis of their chromosome ends e) are needed by bacteria to supercoil DNA 5. DNA methylation a) Modifies bases of tRNA molecules, allowing wobble b) Alters the activity of DNA polymerase by affecting access to the DNA c) Is a modification of histone tails...
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...
1. If a cell has 8 chromosomes, each daughter cell after mitosis will have how many...
1. If a cell has 8 chromosomes, each daughter cell after mitosis will have how many chromosomes? A) 64 B) 32 C) 16 D) 8 E) 4 2. During cytokinesis in plant cells... A) microtubules form a constricting ‘purse string’ between two nuclei B) microtubules help assemble a cell plate of new plasma membrane between two nuclei C) microfilaments help assemble a cell plate of new plasma membrane between two nuclei D) microfilaments form a constricting ‘purse string’ between two...
3. A diploid cell with eight chromosomes undergoes meiosis. (7 pt) a. How many chromosomes are...
3. A diploid cell with eight chromosomes undergoes meiosis. (7 pt) a. How many chromosomes are there in each cell after meiosis I? How many daughter cells are made after meiosis I? Are the daughter cells diploid or haploid? (1.5 pt) How many chromosomes are there in each cell after meiosis ll? How many daughter cells are made after meiosis II? Are the daughter cells diploid or haploid? (1.5 pt) What two mechanisms allow genetic variation among the gametes produced...
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...
C ULPU QUESTION 2 Match the following phases of the cell life cycle to answer the...
C ULPU QUESTION 2 Match the following phases of the cell life cycle to answer the questions the cytoplasm finishes dividing, forming two cells A. telophase B.anaphase C.metaphase D. interphase E. prophase The chromatin condenses into chromosomes the nuclear membrane is degraded cell growth and DNA replication occur . dyads separate into monads the nuclear membrane is re-synthesized the dyads align along the center of the cell centrosomes start to move apart chromosomes elongate into chromatin
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
a. How many chromosome pairs are in this slide? Is this a normal number of chromosomes...
a. How many chromosome pairs are in this slide? Is this a normal number of chromosomes for a human cell? Why or why not? (1.5 points) Ff IR b. Name 2 ways in which non-homologous chromosomes differ from one another that allow us to identify them. (1 point)
4. Telomerases... a) are RNA-containing enzymes involved in replicating the ends of linear chromosomes b) cause aging in cells c) are structures located at the ends of eukaryotic chromosomes d) are needed by bacteria to complete synthesis of their chromosome ends e) are needed by bacteria to supercoil DNA 5. DNA methylation a) Modifies bases of tRNA molecules, allowing wobble b) Alters the activity of DNA polymerase by affecting access to the DNA c) Is a modification of histone tails...
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...
3. A diploid cell with eight chromosomes undergoes meiosis. (7 pt) a. How many chromosomes are there in each cell after meiosis I? How many daughter cells are made after meiosis I? Are the daughter cells diploid or haploid? (1.5 pt) How many chromosomes are there in each cell after meiosis ll? How many daughter cells are made after meiosis II? Are the daughter cells diploid or haploid? (1.5 pt) What two mechanisms allow genetic variation among the gametes produced...
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...
C ULPU QUESTION 2 Match the following phases of the cell life cycle to answer the questions the cytoplasm finishes dividing, forming two cells A. telophase B.anaphase C.metaphase D. interphase E. prophase The chromatin condenses into chromosomes the nuclear membrane is degraded cell growth and DNA replication occur . dyads separate into monads the nuclear membrane is re-synthesized the dyads align along the center of the cell centrosomes start to move apart chromosomes elongate into chromatin
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
a. How many chromosome pairs are in this slide? Is this a normal number of chromosomes for a human cell? Why or why not? (1.5 points) Ff IR b. Name 2 ways in which non-homologous chromosomes differ from one another that allow us to identify them. (1 point)
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