5. (a) (1 pt) Humans, gorillas, and rhesus monkeys have trichromatic vision. spi

Question

5. (a) (1 pt) Humans, gorillas, and rhesus monkeys have trichromatic vision. spider monkeys, and capuchin monkeys do not have trichromatic vision. Based on this information, the phylogenetic tree, and your understanding of parsimony, label the most likely location for the synapomorphy of trichromatic vision on the phylogenetic tree. Owl monkeys (b) (2 pts) Briefly explain your reasoning for your label location (a) (1 pt) Based on your answer to #5, would an evolutionary biologist say that trichromatic vision in humans and rhesus monkeys is the result of homology or homoplasy? 6, (b) (2 pts) Briefly explain your reasoning. (a) (1 pt) A new species of Old World monkey has been discovered that is very closely related to a colobus monkey. Would you expect the new species to have a tail? 7. (b) (2 pts) Explain your reasoning, using the phylogenetic tree to support your answer. Page 4 of 11 Problem 8: (14 pts) Indicate whether each of the following statements is True or False. Two mothers each give birth to a son at a busy local hospital at the same time. The son of Couple 1 has hemophilia, a recessive X-linked trait, but neither parent has the disease. Couple 2 has a son without hemophilia, even though the father has hemophilia. The sons must have been switched at birth. 4. 5. For evolution to be occurring, natural selection must also be occurring. 6. Evolution will always occur any time that an organism needs to change in order to 7. Exposure to a selection pressure, such as an herbicide or antibiotic, is what causes a new 8. Gene flow will cause two populations of organisms to become more genetically similar survive in a changing environment. trait to appear in a population. 9. If genetic drift is occurring you will be able to predict which allele will become more prevalent. 10. New alleles are produced when DNA is transcribed and translated to form a protein.

Explanation / Answer

7 )false the selective pressure doesn't cause change in gene but cause change in survival rate of organism and decreases their reproduction.

8)true. High gene flow in a population of same breed leads to homogenicity in genes hence making it genetically similar.

9)false the genetic drift is not predictable as the phenotype and genotype both are changed as the predictable cause will be very low.

10)false.trancription is a process for gene expression .the new alleles can be formed at the time of mutation transcription just helps in coding and decoding to form a specific protein required.

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