Personality can be influenced by needs.
a.
both environmental and biological
b.
only environmental
c.
neither environmental and biological
d.
only biological

In sheep, the allele for belly fur (a) is dominant to the allele for no belly fur (a). a mother with the genotype aa and a father with the genotype aa produce an offspring.

How can scientists use the fossil record to find evidence of relationships between different species?

Which of these chinese regions is the most densely populated?