Which of the following describes an allele whose characteristic phenotype is masked by the presence of a second, different allele?

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

What type of competition exsist between two species. turtles and fish

The response is the basis for vaccination. primary secondary tertiary none of the above