The alleles for flower color and pollen shape are linked P f…

The alleles for flower color and pollen shape are linked P for purple flowers is dominant to p for white flowers L for long pollen shape is dominant to l for round pollen. A test cross between a parent that is heterozygous at both loci and parent that is homozygous recessive at both loci produces a 1:1 ratio of offspring with white flowers and long pollen, and offspring with purple flowers and round pollen. Which of the following shows the correct pattern of linkage in the heterozygous parent

The allele that causes a particular form of muscular dystrop…

The allele that causes a particular form of muscular dystrophy is a recessive allele that is carried on the X chromosome. If a woman who is a carrier for the trait but does not express it and a man who expresses the trait have a child together, what is the probability that the child will be a girl who does express the trait?