Ewan Gene
ODABODA
A model of how DNA is organized to form genes is shown here. What likely explains how DNA within a single gene
can create multiple phenotypes within the same organism that contains the same genome in each cell?
A)
B)
Differential timing of when genes are expressed can produce different
phenotypes
Differential splicing of exons after intro removal can produce multiple
phenotypes
Different numbers of genes within the DNA molecule can exist within the
same organism
Varying quantities of DNA in each cell results in multiple phenotypes from
the same genome
Different organelles can be used to translate the same gene region, which
results in unique proteins and phenotypes.
D)
E)

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?