Chromosomes from different parents determines the genetic structure of the child (from both parents) only with recessive genes ONLY becoming apparent if they are present in BOTH parents<span />
Answer:
C. Both (a) and (b)
Explanation:
Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.
Scientist study index fossils so they will get an understanding of what life was like back then.
Answer: a mutagens d carcinogens b point mutation c frameshift e missense f nonsense
Explanation: Hope that helps!