Fill in the gaps: The colour of a mouse's fur is determined by a single gene. Different versions of a gene are
known as alleles. Choose the correct terms to complete the following sentences on genes.
There is more than one version of the gene for mouse fur colour. Different versions of a gene
are known as alleles. If a allele is present in an organism it will always be
expressed. A allele is only expressed if are present. The
combination of alleles found in an organism is called its
phenotype dominant gamete recessive
genotype one copy two copies
(4 Points)