Additional information is missing. It is as follows: In fruit flies, the allele for red eyes is dominant over the allele for pink eyes. Straight wings are dominant over curled wings.
Answer:
Genotype = RrSS and RrSs in 1:1 ratio so each has 0.5 probability
Phenotype = All red eyed and straight winged
Explanation:
Given,
Red eyes (R) is dominant over pink eyes (r)
Straight wings (S) is dominant over curled wings (s)
Fly 1 : Homozygous red eyed, curly winged = RRss
Fly 2 : Pink eyed, heterozygous straight winged = rrSs
RRss will produce Rs gametes and rrSs will produce rS and rs gamates.
When fly 1 and fly 2 mate : RRss X rrSs :
rS rs
RS RrSS RrSs
The genotypic ratio is 1 : 1 ( RrSS : RrSs ) that means that each genotype has 0.5 probability. Both the genotypes though have at least one dominant allele for each gene so the entire progeny will have red eyes and straight wings.
the y axis would just be the number or points he got
The ends of a chromosome are called telomeres. They prevent chromosomes from joining together when they are not supposed to.
Answer:
The entrance of the antigen activates cell signaling pathways through cytokines secreted by B cells, thereby triggering an immune response >> Subsequently, B cells also act in antigen processing by presenting them to T-cells.
Explanation:
An antigen is a molecule that binds to an antibody or a B cell receptor. Cell interaction is produced by direct contact of cells in multicellular organisms and this interaction may also be associated with immune responses through intercellular communication by cytokines. The cytokines are released and then bind to cell receptors to trigger an immune response (for instance, inflammation). It is possible to trace the secretion of cytokines and their corresponding receptors by analyzing specific gene expression patterns. The B cells are critical components of the immune system because they release cytokines in response to antigenic stimuli, and they also present antigens to T cells.
