What do you mean by responsible? Do you want to know the genetics behind it, what the surface markers do, or why they are metically important? I think I can help.
Answer:
LysThrHis, LysHisThr, HisLysThr, HisThrLys, ThrLysHis, ThrHisLys
Explanation:
You easily combine the options for the tripeptide if you made a chart
Also you can calculate the posibilities with the factorial function in the calculatio (x!): 3*2*1 (you can multiplicate the number of amoniacids by the followed numbers until 1) = 6
They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves.
A - Ff and Ff is the answer
3rd and 4th awnsers are correct