0
poopy the Answer Is Poopy
Wiki User
∙ 12y ago
Wiki User
∙ 10y ago46
Add your answer:
Earn +20 pts
Could crossing over occur during second meiotic division?
No, tips of homologous chromosomes cross over in Meiosis I. There are no homologous chromosomes by Meiosis I.
A cell with 24 chromosomes undergoes mitosis twice. How many chromosomes will each daughter cell have?
When you say 24 chromosomes BEGINS mitosis, do you mean after interphase(after DNA is replicated)? If you do mean that, then each daughter cell would have 12 chromosomes, because during interphase, DNA is replicated, and the parent cell splits into two daughter cells, which each of them has 12 chromosomes.
After mitosis there are three cells?
At the end of three mitotic divisions, there will be a total of 8 cells. This is because the number of cells double with every division. At the end of the first mitotic division, there are daughter cells. At the end of the second division: daughter cells further divide into two cells, giving 4 cells. At the end of the third division: each of the four cells further divide into 2 cells each, resulting in a total of 8 cell.
Does cytoplasmic division happen in the cell cycle?
No. Mitosis requires only one nuclear division (one cell producing a second cell). Meiosis has 2 mitotic steps - the first results in a parent and a daughter, the second then results in a parent and 3 daughter cells, therefore 2 nuclear divisions.
How many amoebae will there be after the second division?
in first division there will be two amoeba and then after second division there will be four of them which can be calculated by the formula2n where n is the no. of division
How is mitosis different from mitosis?
During meiosis there is pairing between homologous chromosomes for exchange of chromatin material by crossing over and these chromosomes get separated in first stage of meiotic division, thus half of the chromosomes separate at each pole; the second stage of meiosis is more or less similar to mitotic division. At the end of meiosis 4 daughter nuclei are formed whereas in mitosis only 2 daughter nuclei are formed without reduction in the number of chromosomes.
What is the importance during the first division of Meiosis?
In the second meiotic division, the chromosomes in each cell align independently and randomly at the equator of the cell. It is important because without this division, chromosome copies would double at each fertilization.
When chromosomes fail to separate at either the first or second meiotic division this is known as?
a nondisjunction
Why will meiosis ensure that offspring have the same chromosome number as parents?
In the process of fertilization, gametes (sperms from male and egg from female) fuse to form a zygote. Meiosis ensures that the number of chromosomes in each gamete is half the normal number in other non-gamete cells so that when the gametes fuse, the total number of chromosomes will once again add up to the usual number of chromosomes and not have twice the number instead.
Describe the behavior of the chromosomes in the second division of meiosis?
Meosis 1(1st stage) 2 daughter cells are formed with each daughter containing only one chromosome of the homologous pairs thus containing haploid no. of chromosomes each. Meiosis II(2nd stage) is similar to mitosis. DNA does not replicate Chromosomes align at the equatorial plate. Centromeres divide and sister chromatids migrate separately to each pole. Four haploid daughter cells are obtained.
Could crossing over occur during second meiotic division?
No, tips of homologous chromosomes cross over in Meiosis I. There are no homologous chromosomes by Meiosis I.
A cell with 24 chromosomes undergoes mitosis twice. How many chromosomes will each daughter cell have?
When you say 24 chromosomes BEGINS mitosis, do you mean after interphase(after DNA is replicated)? If you do mean that, then each daughter cell would have 12 chromosomes, because during interphase, DNA is replicated, and the parent cell splits into two daughter cells, which each of them has 12 chromosomes.
Which animal has the largest number of chromosomes?
Butterflies have 380 chromosomes. Hermit crabs are in second place with 254.
What is the result of meiosis?
Meiosis happens in the reproductive cells. After the first division you get 2 cells with 46 chromosomes, after the second division, you get 4 cells with 23 chromosomes. In humans at least. These cells will become the sperm cells in males. In females, only one cell of 23 chromosomes becomes an egg, the other 3 are called polar bodies and are reabsorbed into the body basically.
The second phase of meiosis?
The second phase of Meiosis is called Meiosis II. It is characterized by the second division of the cell, so that the two cells from the previous division now become four daughter cells.
Why is the second meiotic division necessary if the reproduction of chromosome number is accomplished by the first division?
You need the second step to further divide the chromosome into two halves. When that happens the sex cells will have half the chromosomes and when combined with the other sex cell that will produce an individual with one half from the father and one half from the mother.
How do two daughter cells differ?
The parent cell will be diploid and contain paired chromosomes. The haploid cell will contain only one copy of each chromosome. In humans for example there are 23 pairs of chromosomes. In a somatic cell, which is diploid, the 23 pairs are present. In a gamete (sperm or egg cell), which is haploid there are only 23 chromosomes - unpaired. This is so that when the sperm and egg meet at fertilisation there are 46 chromosomes - 23 pairs - the correct number for the organism.
