The answer is B: The Populations as isolated and thus do not interbreed.
AIDS attacks white blood cells, damaging the immune system and making the infected individual more susceptible to illness. White blood cells are the ones that fight off harmful bacteria, so without them you could even end up in the hospital or die from a common cold.
Answer:
Because A does not equal T, and G does not equal C, this cannot be a double-stranded DNA molecule. It must therefore be a single-stranded DNA.
Explanation:
The base composition in the observed DNA sample does not follow the Chargaff rule. If it was a double-stranded DNA, the percent proportion of adenine base and thymine base should be equal (either 30% or 20% for both). Similarly, the percent proportion of guanine and cytosine bases must also be equal (either 30% or 20% for both). Since the given sample does not follow it, it is not a double-stranded DNA molecule but is present as a single strand.
Exocytosis. Think of the materials "exiting" the cell.
Answer:
None. Chickens have feathers not fur.
Now to color. The male usually determines color so without that information it is hard to answer with any authority.
In most crosses if the male is black and the hen is white you
will get some black chicks and all will have white/black
variations.
If the male is white and the hen is black you will get some all
white with others showing black and white.
If the breed is Leghorn, even if the rooster is black you will
get mostly white chicks with some throwbacks in red and buff.
Explanation: