The alleles for eye color in fruit flies involves one allele that might contain the sequence ccat. assume that this allele produces red eyes in a fruit fly, because the allele produces a protein that makes red pigment. assume that another allele of this gene has a slightly different sequence in the middle: caat, instead of ccat.
which of the statements below is true about the alleles for eye color in fruit flies?

which of the statements below is true about the alleles for eye color in fruit flies?

a)
the alleles for eye color produce the same phenotype.

b)
the small change in the dna sequence causes the allele to produce a different protein, resulting in the production of white eyes instead of red eyes in the fruit fly.

c)
changes in the sequence of dna bases in a gene do not contribute to genetic variation in the fruit fly population

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

In a cladogram' when does a group of organisms branch off

Donde se encuentra el adn nuclear en un organismo eucariota?