** I tried to use photobucket to upload the pictures beside the questions however it didn't work. I instead had to attach them to this post1. What are the most likely characteristics of the most recent common ancestor (MRCA) of fly species 1 and fly species 2, labeled in the diagram above?
Lots of leg bristles; can't tell on the other two traits
Lots of leg bristles, striped wings; can't tell on eye color
Lots of leg bristles, striped wings, red eyes
Lots of leg bristles, striped wings, white eyes
Q5. Humans carry a variety of non-functional genetic sequences, called processed pseudogenes, in their DNA. We can estimate how long ago these sequences first appeared in the genomes of our ancestors. In humans, processed pseudogenes include the three options below. Which of these would be least widespread among other primate species?
alpha-enolase psi1 (11 million years old)
AS psi7 (16 million years old)
CALM II psi3 (36 million years old)
My answer: A and D
Q7. Rhesus monkeys and gorillas have stereoscopic vision, which allows them to better visually gauge distances while hunting and moving through tree canopies. If stereoscopic vision evolved only once on this tree, and was never subsequently lost, which other primate species on the evolutionary tree possess stereoscopic vision as well? (Hint: First, find the location on the tree of the most recent common ancestor of rhesus monkeys and gorillas.)
Human
Gibbon and orangutan
Gibbon, orangutan, and human
Gibbon, orangutan, common chimpanzee, bonobo, and human
Q8. Which of the following traits (as labeled on the diagram) is shared by both orangutans and gibbons?
Trait R
Trait S
Trait P
Trait Q
Q9. Rhesus monkeys are the last common ancestor of gibbons, gorillas, and humans.
True
False
Q10. Gibbons are more closely related to humans than to rhesus monkeys.
True
False