Probably molecular biology. Scientists have been able to look at organisms and compare them visually for rather a long time, but only recently have we been able to sequence genomes and compare organisms at the molecular level.
Answer:
Google
Explanation:
Look up a picture on google there is your answer :D
The answer that makes the most sense is number one or two. Number 3 and number four both makes no sense in that context. Most of the time an animal will not die or mutate due to a parasite in its body.
Answer:
a weightlifter lifts a 20 kilogram barbell above his head
Your answer will be c. each child receives some traits from each parent