The number of copies of a specific version of a gene divided by the number of copies of all versions of that gene. This number can be used to show the amount of biological diversity in an individual, a population, or a species. a: chromosome
b:genetic drift
c:allele frequency
d:gametes

Why zebra fish experience similar genetic disease as human

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?

Viral infections can be contracted only from direct contact with someone infected true or false