Answer:O male cats only have one X chromosome
Explanation:
Answer:
The correct answer is option C, that is, in the mother in meiosis II.
Explanation:
A nondisjunction in meiosis I produce all the aneuploid gametes, while nondisjunction at meiosis II produces 50 percent aneuploid gametes and the 50 percent normal gametes comprising haploid number of chromosomes.
As it is mentioned that one of the brothers possess normal number of chromosomes (46), the mother encounters nondisjunction at meiosis II resulting in the formation of one n+1 gamete exhibiting two copies of X chromosome. Fertilization of this n+1 gamete with sperm results in the creation of zygote (47, XXY).
Answer: Option B
Explanation:
Deforestation can be defined as the cutting down of trees in huge number. This act increases the amount of green house gases in the environment.
This is so because the carbon dioxide which is an important green house gas is absorbed by the trees which reduces the concentration of green house gas and thus decreases green house effect.
But lesser number of plants will increase the amount of carbon dioxide in the atmosphere thus increasing the green house effect.
<span>Trans = Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves. An example of transpiration is when a plant absorbs water in its roots.
Persp = the process of sweating.</span>
12. D selective breeding
14 D
16: B
I can’t see the other questions sorry!
