1. Four daughter cells is matched with sexual reproduction.
Meiosis that results in the production of sexual cells or gametes for reproduction.
Il consists of two cell divisions, successive and inseparable.
* The first meiotic division is called reductional because it allows to pass from 2n double chromosomes to n double chromosomes.
* The second is called equational because it preserves the number of chromosomes: one passes from n double chromosomes to n simple chromosomes.
Meiosis thus allows the formation of 4 haploid daughter cells (or gametes).
In addition, the cycle of meiosis is closely related to the centrosome cycle.
2. Two daughter cells is matched with asexual reproduction.
Asexual reproduction of a mother cell results in two identical daughter cells, eg mitosis. This process is composed of four phases: prophase, chromatin condenses, then metaphase, chromosomes gather, then anaphase, homologous chromosomes separate, and finally the telophase, the cell divides into two, is cytodiesesis.
3. Meiosis is matched with sexual reproduction.
Meiosis is a cell division intended for sexual reproduction. It is for the body to produce sexual cells, the gametes, which deliver only half of the genetic information needed by an individual. In other words, a spermatozoon includes a first half of the inheritance, while an egg contains the second part.
4. Mitosis is matched with asexual reproduction.
Mitosis is a cell division that involves the body creating two daughter cells from a mother cell each time retaining the original genetic information. This process of cell division is preceded by what is called the interphase, a cycle during which the cell grows, intensifies its metabolism and replicates its DNA.
5. Genetic variation is matched with sexual reproduction.
We consider two pairs of alleles (A, a) and (B, b) located on two different pairs of chromosomes. Both parents are heterozygous (A // a, B // b).
Show how the genetic mixing during meiosis and fertilization allows to obtain a diversity of genotypes of the descendants of the couple.
6. Identical DNA is matched with asexual reproduction.
Mitosis is a continuous process that lasts 30 to 180 minutes depending on the cells. Mitosis results in the formation of two daughter cells genetically identical to the parent cell.
The cell begins by duplicating its genetic information contained on the chromatin filaments. These split up and formed a sort of X. Then they broke up and reorganized into the cell nucleus, which then split into two nuclei, each with identical genetic information. The cell then divides into two daughter cells, ready to grow. Each enters the interphase in anticipation of a new division.
7. Fertilization is matched with sexual reproduction.
Fertilization is the stage of sexual reproduction consisting of gamete fusion, usually a male gamete and a female gamete into a single cell called zygote.
Fertilization allows the passage of two haploid cells, ie the gametes, into a diploid cell which is the zygote.
