Answer:
The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant.
The answer to this question would be: move forward
Endolymph is the organ in the semicircular canal that can detect acceleration and deceleration. When your body moving forward, the endolymph is lagged behind, and then slowly moving forward. When you stop the endolymph still moves and then slowly moving backward.
it similar to the case when you stand inside a bus that moving or stopping.
I believe its A because its asking about the pattern of DNA. i hope that helps