1 A farmer has rabbits with two particular traits, each controlled by a separate gene.
Coat colour brown is completely dominant
to white. Tailed is completely dominant to
tail-less. A brown, tailed male rabbit that is
heterozygous at both loci is crossed with a
white, tail-less female rabbit. A large number
of offspring is produced with only two
phenotypes: brown and tailed, white and tail-
less, and the two types are in equal numbers.
(i) State both parents' genotypes and the
gametes that are produced by each during
the
process of meiosis.
Male genotype:
Female genotype:
Male gametes:
Female gametes:
(ii) Predict the genotypic and phenotypic ratios
of the F, generation. Show your working.

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.