What is TRUE about alleles? All alleles are recessive.

All alleles are expressed.

Everyone inherits two copies of the same allele from their parents.

They are different copies of the same gene.

I’m not sure about this question

Answertechnician (a) is correct;

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.