Mitosis
Meiosis
Prophase
1.This process start in the somatic cells.
2.it start in a cell that had a diploid number of chromosomes,which in humans would be a total of 46 chromosomes.
3.Then the chromosomes should cross from being spread out to be in a condense form.
4.The nuclear membrane starts disappear.
1.This process start inside the germ cells, in the testicules for men, and ovaries in women.
2.This process seem to happen in two different phases.
3. It starts in a cell that contains a diploid number of chromosomes.
4. Then it replicates the DNA in its interphase.
Metaphase
5.The nuclear membrane is gone.
6. Then the chromosomes starts lining in the middle. 7. The centrosomes are in opposite side.
8. Centrosomes help and
…show more content…
The most regular case of trisomy is called Down Syndrome, these people with Down syndrome could be recognize, because they seem to have short height and small digits, facial characteristics could contain broad skull and large tongue, plus mean developmental delays. These seems to happen when women are older, and become …show more content…
Translocations could be related with different type of cancers and with schizophrenia. On other path, exist the reciprocal translocations, that occur when there is an exchange of chromosome parts among two chromosomes, which prevents the loss or gain of DNA.
Duplications and deletions: often produce children that survive but contains physical and mental abnormalities. Duplicated chromosome parts may come together to existing chromosomes or could be free in the nucleus. variations: “One X chromosome in each cell inactivates by tightly condensing into a inmobile structure called a Barr body. The chance that an X chromosome from the mother or from the father is inactivated in each cell is random, but once the inactivation occurs, all cells derived from that one will have the same inactive X chromosome or Barr body. One variation that occurs is called tortoiseshell cats, embryonic X inactivation is observed as color variegation, like Females that are heterozygous for an X-linked coat color gene will express one of two different coat colors over different regions of their body, corresponding to whichever X chromosome is inactivated in the embryonic cell progenitor of that region”(OpenStax College,