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Q1. Explain why an organism with a homozygous dominant genotype has the same phenotype as an organism with a heterozygous genotype. Q2. Explain the physiological connections between calcium blood levels and the actions of calcitriol, calcitonin, and parathyroid hormone. What are the dangers if one of these is not working […]

QUESTION 1Which of the following statements best defines the two main differences existing between prokaryotic and eukaryotic cells? A. Prokaryotic cells possess a nucleus but lack organelles while eukaryotes lack both a nucleus and organelles. B. Prokaryotic cells possess a nucleus and organelles while eukaryotes lack both a nucleus and […]

Q1. Seedless watermelons are actually a product of “mistakes in meiosis” These seedless watermelon are triploid (3n) and are produced by crossing a tetraploid (4n) strain with a diploid (2n) plant. Briefly explain why this mating produces a triploid individual. Why can mitosis proceed normally in triploid cells, but meiosis […]

In shorthorn cattle, coat color may be red, white, or roan.Roan is an intermediate phenotype expressed as a mixture of red and white hairs. The following data was obtained from variouscrosses:     red x red………all red     white x white….all white     red x white……..all roan     roan x roan…….1/4 red; 1/2roan;1/4 white How […]