What is a dominant allele?

question 6 options:

an allele that can never be expressed

an allele that is only expressed when no dominant allele is present

an allele that is acquired after birth

an allele that is always expressed when the allele is present

1. Dominance (complete dominance) would be a case in which 1 allele is always dominant over the other(s).

Example: we could see this clearly when breeding to homozygous dominant organisms (offspring are always dominant).

Conclusion:

Option 4 (d) is correct.

Hope it helped,

BiologiaMagister

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.