If the cell under the microscope appears to be in fourth grade it indicates that it is ready for cell divison or mitosis .
Explanation:
* if the cell reaches the fourth stage , it increases in size .
* At about the same time , the copying of the DNA happens
this is the stage where the growth of the cell stops completely .all the concentration would be towards the division of the cell.This is the stage where the cell divides into two daughter cells .after this division , the two daughter cells also ,begin their cell cycles. so ,fourth phase of cell cycle is the beginning of the cell cycles of many daughter cells also .
Answer:
XHXh × XHY
XHXH XHY XHXhXhY
XCXC × XcY
XCXc XCY XCXc XCY
Colour blindness is a sex- linked recessive disease. It is inherited by the X chromosomes.
Alkali metals displace Hydrogen from H2O in order to make the Hydroxide ion, the displaced Hydrogen is formed as H2 gas.
An ant is able to find food and bring it back to the colony. The question however, is how ants manage to navigate through together. Many experiments conducted show that those ants currently not engaged in carrying food or any other items, mark the ground with chemical scents. In this case, if this student wants to apply a scientific method to determine how the ants detected the trail, hypothesizing that the ants are following a scent trail that the first ant left is the first step in her application of the scientific method. The hypothesis that ants can solve problems that require adjusting their orientation cues and learn to forage on a single directional traffic system would be the the first purpose of this experiment.
Answer:
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.