Answer:
Chemicals that are secreted from antigen-presenting cells then activate helper T cells.
Explanation:
The value of 2pg in the given population is 0.432
<u>Explanation:</u>
Given:
C is normal
c is curly wings
So the homozygous dominant condition would be CC
Heterozygous condition would be Cc
Recessive condition would be cc
According to Hardy Weinberg principle,
p² + 2pq + q² = 1
and
p + q = 1
Here,
q² = cc = 100
q² = 100 / 1000
q = √0.1
q = 0.316
So,
p + q = 1
p + 0.316 = 1
p = 0.684
Thus, 2pq would be:

Therefore, the value of 2pg in the given population is 0.432
Answer:
oceanography
Explanation:
This is because astronomy is the study of stars and celestial things. Biology is the study of life and organisms. Meteorology is the study of weather and atmospheric phenomena. Oceanography is the study of physical and biological properties of the sea.
A flatworm does not have a body cavity.
D. one experiment is performed but the scientists control the variables