The correct answer of the given question above would be Meiosis-Prophase I. When you are looking at a cell through a microscope and see that a tetrad has formed, the phase of meiosis that the cell is in is in the Prophase I. This is when homologous chromosomes pair with one another to form tetrads. Crossing over occurs. Hope this answer helps.
Answer:
The population of the white mice would significantly decrease, and most of the mouse population would be with brown fur.
Explanation:
As stated in the question, the brown mice survive better in warmer times. This is due to the fact that with winter and snowy times it makes it harder for prey to spot the WHITE mice v.s. the BROWN mice who would very easily be spotted by the prey in snowy regions.
Letter A. This is true it is caused from bacteria on the skin.