Q. How many chromosomes are in a primary Spermatocyte?
46 chromosomes
Q. How many chromosomes are in a homologous pair?
23 chromosomes
Table of Contents
- Q. How many chromosomes are in a primary Spermatocyte?
- Q. How many chromosomes are in a homologous pair?
- Q. What is the probability that in an organism with a haploid number of 13 a sperm will be formed that contains all 13 chromosomes whose centromeres were derived from maternal homologs?
- Q. What are the two main stages of mitosis?
- Q. What do the stages of mitosis look like under a microscope?
- Q. What happens in each of the 4 phases of mitosis?
- Q. How do human cells reproduce?
- Q. Which human cells do not reproduce?
- Q. How cell is formed?
- Q. Can mitosis ever be used for human reproduction?
Q. What is the probability that in an organism with a haploid number of 13 a sperm will be formed that contains all 13 chromosomes whose centromeres were derived from maternal homologs?
Answer is 0.00012. Therefore the probability that C’s sperm contain all maternal homologs is .
Q. What are the two main stages of mitosis?
Stages of mitosis: prophase, metaphase, anaphase, telophase. Cytokinesis typically overlaps with anaphase and/or telophase. You can remember the order of the phases with the famous mnemonic: [Please] Pee on the MAT.
Q. What do the stages of mitosis look like under a microscope?
During the last of the mitosis phases, telophase, the spindle fibers disappear and the cell membrane forms between the two sides of the cell. When you look at a cell in telophase under a microscope, you will see the DNA at either pole. It may still be in its condensed state or thinning out.
Q. What happens in each of the 4 phases of mitosis?
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister chromatids are pulled to opposite poles of the cell 4) Telophase: nuclear envelope …
Q. How do human cells reproduce?
Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.
Q. Which human cells do not reproduce?
Permanent cells are cells that are incapable of regeneration. These cells are considered to be terminally differentiated and non-proliferative in postnatal life. This includes neurons, heart cells, skeletal muscle cells and red blood cells.
Q. How cell is formed?
New cells are created from existing cells through a process referred to as the cell cycle. One cell can make a copy of itself and form two new daughter cells. There are two major tasks that have to happen every cell cycle. First, cells have to make an exact copy of their DNA.
Q. Can mitosis ever be used for human reproduction?
In single-cell organisms, mitosis is the only form of cellular reproduction. One round of mitosis yields two genetically identical cells. This is classified as asexual reproduction because it does not require sex for the creation of new organisms.