Answer:
A
Explanation:
Less pollution means less greenhouse gasses being emitted.
Answer/Explanation:
The result of mitosis without cytokinesis will be a cell with more than one nucleus. Such a cell is called a multinucleated cell. This can be a normal process. For example, humans have certain multinucleated bone cells (osteoclasts) that are formed this way
Answer:
The mentioned characteristics of variability are witnessed because of the phenomenon known as X chromosome inactivation in heterozygous females. As females possess two X chromosomes, they actually should not possess any color blindness.
The phenomenon of X-chromosome inactivation takes place in a random manner at the time of embryo development. During this only one X chromosome is inactivated. If the chromosome comprising the defective gene is inactivated, the individual will possess normal vision.
If the chromosome comprising the usual gene gets inactivated than the individual will be color blind. In the given case of female, X inactivation took place in one eye. The inactivation of normal alleles has taken place and thus she possesses normal vision with one eye and is color blind in the other eye.
