genetics replacement exam

The DNA coding for a particular protein consists of 600 base pairs. How many amino acids are in the protein encoded by this gene? - Answer- 200 amino acids The process shown in the diagram is oogenesis in giraffes. Egg cells of giraffes have 15 chromosomes. How many chromosomes and chromatids would be found in the cell indicated with an arrow? - Answer- 15 chromosomes, 30 chromatids The DNA of a cell is replicated during what phase of the mitotic cell cycle? - Answer- S The genome of the fruit fly Drosophila melanogaster contains 1.4 x 108 bp of DNA, and approximately 20% of the genome codes for proteins. If the average protein encoded by each Drosophila melanogaster gene contains 580 amino acids, approximately how many protein coding genes are present in the Drosophila melanogaster genome? - Answer- 16,000 Which of the following people was one of the rediscoverers of Mendel's work? - Answer- Hugo De Vries Which of the following people proposed the X chromosome inactivation hypothesis? - Answer- Mary Lyon The HLA-A, HLA-B and HLA-DR genes, which are very important for transplant matching, each have more than a thousand alleles found in the general population, with no one allele found in more than 3% of individuals. What is the chance that two siblings have a perfect match for the alleles of these genes? - Answer- 1/4 The next four questions refer to the following cross involving the independently assorting genes A, B, C, D, E, and F. Unless otherwise stated, assume that the capitalized allele is fully dominant, and that these genes show no genetic interactions (epistasis, etc.)