An individual who is heterozygous for a gene has:
a. alleles at a given locus that are different from one another
b. alleles at a given locus that are the same.
c. alleles at different loci that are the same.
d. a recessive gene on chromosomal pairs.

A.

Explanation:

When we say that an individual is heterozygous, it means that the two alleles at the locus we are studying are different from one another. That is, each one of the parents contributed a different allele.

On the other hand, If the alleles at that locus were the same we would say the individual is homozygous. In other words, the two parents contributed each the same type of allele.

The correct answer for above statement is:

Only kinetic energy increases when the velocity of an object increases.

Explanation:

It is considered as the work required to expedite the object of provided mass from the rest position to designated velocity. The kinetic energy of an object raises because of the network was done over it. Accordingly, when the object gets acceleration from the state of rest to the change it gains velocity. Thus, determining when the kinetic energy of an object improves velocity increases.