Answer:
It would be B
Explanation:
By doing the punnet square, you get BB, BB ,Bb, Bb, of which 50% are heterozygous.
Answer:
IgM, IgA, IgE, IgD and IgG
Explanation:
IgM functions in the initial response to offence.
IgA is important for protection of mucus membranes such as in saliva, sweat, tears and gastric fluid.
IgE is active during allergic reactions and defense against infections.
IgD is found on the surface of lymphocytes and is activated upon contact with antigens.
IgG forms part of the secondary response to antigen and is also responsible for newborn protection.
Answer:
primary succession only occurs on bare rock
Explanation:
The answer would be "a person's skin"
hope this helps :)
