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gon gon
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9 years ago
Which do you think are likely to be multifactorial traits with phenotypes that are influenced by genes and environment?  having trouble with this question on mastering genetics
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Staff Member
Educator
9 years ago
1.Check off:

body weight in chickens

fruit weight in tomatoes

growth rate of sheep,

milk production in cattle

2. Only 2 of the 4 gametes will be abnormal due to the nondisjunction.

3. Nutrition and nutrient sources (these make the most sense to me, because they have to cover what I mentioned in number 1).

Hope this helps!
Mastering in Nutritional Biology
Tralalalala Slight Smile
wrote...
9 years ago
B cell co-receptors

The specific B-cell receptor (BCR, an immunoglubulin molecule attached to the membrane of the B cell) recognises the antigen in native form, as opposed to the TCR that recognises antigenic peptides. Costimulation of B cells is notably achieved by the molecule CD40. CD40 ligand is expressed on T cells. As B cells can also present peptides to T cells, there is a dialogue between T- and B cells that allows continuous B-cell proliferation and optimal activation leading to their differentiation into plasmocytes, which are mature B cells producing high affinity antibodies against the original antigen.
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