what is allopatric population?
What information can genetic testing provide?
Does unwinding DNA cause aging?
A normal woman whose father was a hemophiliac marries a normal man. What are the chances of hemophilia occurring in their children?
how do you differentiate chromosomes and chromatids ?
What situations might be viewed as ethical uses of human cloning? Are you doubtful, fearful, or hopeful about human cloning?
what is Genetic Base for a Species ?
what is the difference between muton and recon?
what are introns and exons?
What are teaspoons?
Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?
What is inbreeding ?
A blastomere was removed from an 8-cell human embryo, and its beta-globin gene was amplified by PCR. The beta-globin DNA was treated with an enzyme that cuts on either side of and within the normal allele (producing a small fragment), but not within the sickle cell allele (producing a large fragment). Electrophoresis of the treated DNA from the blastomere demonstrated the presence of both a large and small fragment derived from the beta-globin genes. How should you interpret this test?