Genetics Answers

In water melon, red fruit colour (R) is dominant over cream fruit colour (r). A water
melon plant homozygous for red fruits is crossed with a plant homozygous for
cream fruits. The F1 are intercrossed to produce F2.
(a) Give the genotypes and phenotypes of the parents, the F1, and the F2.
(b) Give the genotypes and phenotypes of the offspring of a backcross
between the F1, and the red fruit colour homozygous parent.
(c) Give the genotypes and phenotypes of a backcross between the F1, and the
cream fruit colour homozygous parent.

Compare and contrast the following terms:
(a) Gene and allele.
(b) Genotype and phenotype.
(c) DNA and RNA.
(d) DNA and chromosome.
(e) Locus and allele.

What roles do the following play in cloning a DNA fragment?
(a) Restriction enzymes.
(b) Vectors.
(c) DNA ligase.
(d) Electroporation.

The frequency of a recessive allele in a large randomly mating population is 0.2.
What is the frequency of:
(a) The dominant allele?
(b) The heterozygote

the Chromosome 6 module - how computer simulation has been used to test different evolutionary scenarios that might explain SNP density and SNP diversity.

why is it necessary to reduce the number of chromosomes in gametes by one half

A population of squirrels have 250 red-sided individuals and 750 tan-sided individuals. Assume that red is totally recessive. Calculate the allele frequencies of each allele.

A man and his wife both have normal colour vision. The woman gives birth to a colour blind daughter. The man claims that he could not have fathered this daughter. Does genetics back his claim?

relationship between growth and reproduction traits of goats

What is meant if female bees are diploid and males are haploid and if females and males produce haploid gametes