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2 years ago
** 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 post

1. 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 Slight Smile




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
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wrote...
Educator
2 years ago
1. 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

lots of leg bristles, striped wings, can't tell on eye color
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wrote...
Educator
2 years ago
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

Most likely the oldest one, in this case CALM (option 3).
The primates didn't all split off at the same time from our common ancestor. Some split of earlier than others, so if you go for the oldest option it's the most likely that even primate species that split of from the common ancestor the earliest still have the gene.
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wrote...
Educator
2 years ago
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

Gibbon, Orangutan, Common Chimpanzee, and Human
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wrote...
3 weeks ago
Thanks for the help
wrote...
Educator
3 weeks ago
Thanks for the help

Welcome.. Let us know if you need further help
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