Answer:
The colour of a mouses fir is determined by a single gene. different versions of a gene are known as alleles.
Explain how a gene codes for a characteristic?
From the assertion above, every genotype is made up of a pair of allele which one is donated from a parent to form a genotype. The dominant gene determines the characteristics that the offspring would exude.
Step-by-step explanation:
if parent A donates an allele T and parent B donates an allele t, both parents now has Tt has a pair of allele but the ones from parent A dominates which is T over t, then such offspring exudes tallness which is a gene inherited from one of the parents