Mitosis is asexual and meiosis is sexual. Meiosis has two rounds of genetic separation and cellular division while mitosis only has one of each. In meiosis homologous chromosomes separate leading to daughter cells that are not genetically identical. In mitosis the daughter cells are identical to the parent as well as to each other.
Nondisjunction is the chromosomes may fail to separate during meiosis, the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.
A recessive gene is a gene that can be masked by a dominant gene. Example is, such as blue eyes, you must get the gene for blue eyes from both of your parents.
A dominant gene is a segment of DNA information that is used to make chromosomes. Dominant genes are a result of dominant alleles in chromosomes. When an allele is dominant it is expressed in the phenotype over a recessive allele.
A somatic cell is any cell of a living organism other than the reproductive cells.
a Germ cell is a cell containing half the number of chromosomes of a somatic cell and able to unite with one from the opposite sex to form a new individual.
Klinefelter syndrome is a condition in males who have XXY sex chromosomes, rather than the usual XY. Some also have additional X chromosomes, or more than one Y chromosome.
Down Syndrome is a congenital disorder, caused by the presence of an extra 21st chromosome.
Color blindness is the inability to perceive colors in a normal fashion. The most common forms of colorblindness are inherited as sex-linked (X-linked) recessive traits.
The turners disease in women that is characterised by the absence of an x chromosome. This disorder inhibits normal sexual development and causes infertility.Oct 3, 2005