Answer: B
Explanation:
The T helper cell needs to acttivate the T cyctotoxic cell in order for the Tc cell to go do its work.
Once the TC cell is active it interacts with MHC-1 proteins on the surface of the infected host cell, this allows the Tc cell to recignise the host cell and begin secreting cytotoxins (perforins and granzymes) in order to degrade the infected cell and cause apoptosis (controlled cell death)
Answer:
C) cytoplasmic determinants
Explanation:
Cytoplasmic determinants are special molecules which play a very important role during oocyte maturation, in the female's ovary.
Answer:
a. Centromere
A centromere is a specialised DNA sequence of a chromosome that links pair of sister chromarids (a dyad)
Answer:
they got black dot on their white wings.
Explanation:
And black pepper moths dont but they are natural selected from the white pepper moths.
Your answers would be
<span>less than average ... more than average
Hope this helps [:
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