Two genes, BRCA1, located on chromosome 17q21 (5,6), and BRCA2, located on 13q12-13 (7–9), have been shown to predispose to familial breast cancer.
Organisms that are well adapted to live together to in the same area over time.
Variation and natural selection
<span>Okay, so herbivores are animals that feed on plants, so in Finding Nemo, those would be Bubbles (a yellow tang), the turtles, and Dory (a blue tang). On the other hand, carnivores are all animals that eat meat in order to survive, so in this cartoon, those animals would be primarily the sharks: Chum (a maiko shark), Bruce (a great white shark), and Anchor (a hammerhead shark). </span>
The answer is an envelope.
A virus is an infectious agent that can replicate only inside a host cell. When it is outside the cell, it consists of genetic material coated with protein capsid. Some viruses also have an envelope which covers capsid. The function of the envelope is to identify and bind some receptor sites on the host membranes. After fusing with the cell membrane, it allows to capsid and genetic material to enter the cell and infect it.
