I believe it is A) Nucleus
Boreal Forest Biome is the biome having coniferous trees as a major characteristic

The primary source of energy in a food chain is Sun, because producers are the ones that prepare food by themselves and that food is then passed on to higher levels in food chains. And as the producers make their from Sunlight, the primary source of energy in food chain is <u>Sunlight</u> .
Answer:
aneuploidy
Explanation:
The most common type of chromosomal abnormality is known as aneuploidy, an abnormal chromosome number due to an extra or missing chromosome. Most people with aneuploidy have trisomy (three copies of a chromosome) instead of monosomy (single copy of a chromosome).
Answer:
Musca domestica
Explanation:
The number of unique gametes produced by a diploid individual is 2^n, where n is the number of pairs of chromosomes (or the haploid number).
For that reason, species with higher number of homologous chromosome pairs will show greater genetic variation in the progeny.
- Drosophila melanogaster has four pairs of chromosomes, so it can produce 2^4=16 different gametes.
- Musca domestica has six pairs of chromosomes, so it can produce 2^6=64 different gametes.
Musca domestica has more genetic variation.