If two different alleles for a trait are present and one allele doesn't entirely block the expression of the other, the genetic situation is in-complete Dominance
They do not have external ears like us. but they do have ear holes located directly behind their eyes. frogs ear holes are covered with thin tympanic membranes or the eardrums that protect the inner ear cavity.
The correct option is C,
<span> bacteriophages</span>
