Question

Scientific evidence indicates that H. erectus were the first hominids to emigrate from Africa. Which of the following would most likely bring the reliability of this information into question?

Answer 1

I kind of need to know what the possibilities are before I can give you advice.

Answer 2

DNA analysis showing H. erectus and modern humans did not have a common evolutionary ancestor

An archaeological dig finding fossil remains of A. africanus in Europe and Asia

Finding tools used by H. erectus in continents other than Africa

A discovery of fossils of H. erectus showing that they walked upright

Answer 3

Which answers do you think are wrong and which ones do you think it might be?

Answer 4

When I read the question, I immediately eliminated the first one and the last one.

Answer 5

I think it's A. Could I be correct?

Answer 6

Yeah, those are definitely easy ones to eliminate, and you can eliminate B because H. Africanus has nothing to do with H. erectus. I'd agree with you.

Answer 7

Wait, I thought you got rid of the first and last and picked C!

Answer 8

I did!

Answer 9

Actually I haven't been in anthropology in a while, so perhaps I'm wrong. It wouldn't be too big of a deal in my mind if we found tools used by them in other continents since they traveled out of Africa.

Answer 10

I have no idea why I just said A.! Oh my gosh I must be going crazy haha! I meant to say C. Geez that was a weird moment I just had lol.

Answer 11

Actually I thought it was B, but I wrote a because it looked like the first choice at a glance if you know what I mean

Answer 12

H. Africanus I believe came before H. Erectus. So if that's true and H. Erectus was the first hominid to leave Africa, it wouldn't make sense to find H. Africanus remains anywhere else but Africa. B is definitely the right answer.

Answer 13

Thank you for your help! Can I verify my answer with you for another question I did earlier?

Answer 14

Sure, go for it.

Answer 15

Imagine that a new species of frog has been discovered in South America. One of its genes controls whether or not it has red spots on its green body. The allele for red spots (R) is completely dominant over the recessive allele (r) for no spots. The frequency of the recessive allele (r) in the population is determined to be 0.2. Assuming the population is in Hardy-Weinberg equilibrium, use the Hardy-Weinberg equations to predict the percent of the next generation of frogs that will have red spots.

96 percent of the population will have red spots.

64 percent of the population will have red spots. > I chose this answer

80 percent of the population will have red spots.

32 percent of the population will have red spots.

Answer 16

It's been too long, I don't remember Hardy-Weinberg equilibrium. Maybe wikipedia or google can help?

Answer 17

I've been trying to figure out this answer for a while and have tried that. Thank you for trying! What about this one:

Which of the following best explains a way that a molecular clock can be used?

The number of DNA mutations in an organism is measured over time to determine how long it will take for a new species to evolve.

The number of DNA mutations in a species is compared to the number of DNA mutations in another species to determine the relative amount of time each species has been evolving.

The number of differences in a specific DNA sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.

The number of differences in the DNA sequences of two organisms of the same species is averaged to determine how many years of evolution have occurred.

Answer 18

I chose the second one.