Question

4. Gorillas, chimpanzees, and humans are able to taste PTC, but chimpanzees and humans have also derived the capacity to be a non-taster via convergent evolution. Using the information in the table below, construct a phylogenetic tree that reflects these derived traits. "1" indicates the presence of the trait,"0" indicates the absence of the trait (4 marks). Traits Species PTC Taster Loss of PTC Taste Similar teeth, skull and genitals Gorilla Chimpanzee ree 1 1 1 1 1 1 Human Draw your tree in the space below: Grade /13

Answer 1

Answer:

• PTC taster is found in gorilla, chimpanzee and human.
• Loss of PTC taste and similat teeth, skull and genitals ate present in chimpanzee and human.
• This suggests that chimpanzee and human are the sister taxon.
• And they are closely related to each other as compared to the gorilla.

Gorilla Chimpanzee Human +LOSS Of Prc Taster (140) to similar teeth,skull (0+1) PTC taster (071)

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