The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells. … So, though homologous chromosomes are very similar, they are not identical. The homologous chromosomes are separated when gametes are formed.
Are gametes exact copies of body cells?
Somatic (body) cells make exact copies of themselves. … Process that produces gametes (sperm/eggs) with 1/2 genetic material of the original cell. These gametes will combine to form a new organism.
Do gametes produce identical cells?
Two gametes in each pair of cells produced by meiosis are not identical because recombination of alleles (genes) present on two homologous chromosomes occurs during meiosis.
Are the 4 gamete cells identical?
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. … Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.
Why are cells not genetically identical?
There are now two cells, and each cell contains half the number of chromosomes as the parent cell. In addition, the two daughter cells are not genetically identical to each other because of the recombination that occurred during prophase I (Figure 4).
What are the 3 additional haploid cells called?
During the creation of oocyte, 3 additional haploid cells are created that will not be fertilized these cells are called Polar bodies.
Why is prophase the longest phase?
The longest phase of mitosis is prophase because During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiates mitotic spindle formation. The chromatin fibers condenses into discrete chromosomes. The nucleolus also disappears during early prophase.
Why are no two gametes exactly alike genetically?
No two gametes exactly alike genetically because each gamete has a different combination of parental chromosomes that is the result of both crossing over and independent assortment.) … (It results in the production of four haploid cells.)