Which of the following statements is false?
the number of chromosomes is different in different organisms.
there are more genes in a cell than there are chromosomes.
a single gene can only influence a single trait.
the karyotypes for a male human and a female human look different.

The false statement is "A single gene can only influence a single trait".

Explanation:

A single gene can control or influence one or more than one trait. The ability of a single gene to control or affect more than one character or trait is called pleiotropy. However, according to one gene-one enzyme hypothesis gene act through enzyme production that each gene is responsible for single enzyme that affects a single step in a metabolic process.

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

the answer is c because it is most logical.