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A population of Hawaiian Drosophilia is segregating two alleles, p1 and p2, of the phosphoglucose isomerase (PGI) gene. In a sample of 500 flies from this population, 26% were p1p1 homozygotes, 62% were p1p2 heterozygotes, and 12% were p2p2 homozygotes. Answer the following questions based on this data: a- What […]

A rat metabolism experiment was conducted under the following conditions: temperature of 24 C and barometric pressure of 735 mm Hg. The rat weighed 78.5 g and consumed 5 ml of oxygen in 346 seconds. Constants: 4.8 g cal/ml O2; 2.155 cm2/g a) What would the corrected gross oxygen consumption […]

Q1. Describe why you can predict that meiosis gives rise to genetic differences between parent’s cells and daughter cells in fewer cell divisions than mitosis does? Q2. A fly that is homozygous for normal wings and red eyes is crossed with a fly that is heterozygous for wings and homozygous […]

REPRODUCTIVE SYSTEM When is the corpus luteum produced, what is its function and when does it degenerate? How does the nervous system affect the male sexual response? How is the pituitary gland involved in the production and ejection of milk? Where are the gametes produced in the male and female? […]