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As animals attained larger and more complex bodies, exchanges with the environment and distribution of gases, food and waste within the animal became more difficult. Describe the problems of larger bodies and the solutions that solved these problems but led to increased complexity. Consider advances of Porifera, Cnidaria, and Platyhelminthes […]

a. Give one reason why genes may not follow Mendel’s 2nd Principle. Explain clearly. b. What is meant by the term double crossover as it relates to recombinant progeny. Explain your answer by giving the genotype of parental chromosomes and those chromosomes showing a double crossover event. c. If the […]

1. (a) What is the structural difference between all deoxyribonucleotides and all ribonucleotides and why does this make DNA more appropriate to act as the genetic material than RNA.(b) Why is uracil replaced by thymine in DNA? (4 points)(c) Can ribonucleotides base-pair with a deoxyriboncleotides and if so when does […]

Q1. Imagine the allele controlling brown eyes B, is dominant over that controlling blue eyes b, in human beings. A blue eyed man marries the brown eyed woman and they have six children all brown eyed. What is most likely genotype of the father? Mother? If the seventh child had […]