Gen A có 1200 cặp nu và 2800 liên kết hidro. Gen A bị đột biến mất một cặp A-T trở thành alen a. Hãy xác định:
a- Số nu mỗi loại của gen A.
b- Số nu mỗi loại của alen a.

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation:

the correct answer is c   with the systems

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.