Evolution

11 - 20 of 45 Answers

January 16, 2013: I’ve been reading about how humans went from 48 to 46 chromosomes.  How is this possible?  Wouldn’t you end up with Down syndrome or something?
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December 12, 2012: I have heard we have genes in our DNA for beaks which kind of supports the idea that we all evolved from other animals. If this is the case, are there other recessive genes that we have like the one for the beak?
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September 28, 2012: It seems to me that since good mutations are so rare, any trait that requires a lot of mutations shouldn’t happen.  Are there any real examples of something like this happening?  Where many mutations lead to a new trait?
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August 7, 2012: Will some types of fish that are regularly caught by hook and line eventually evolve a resistance to this type of fishing method?
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December 13, 2011: Since a leech, a vampire bat, and, a mosquito all consume blood from mammals, is it accurate to say that some part of each of these animals DNA is exactly alike? And further that all other creatures that do not consume blood do not have this same genetic trait in their DNA?
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April 14, 2011: Looking over human genomes and genomes of certain animals, I found on the Human Genome Project's website, I have found that the genomes of certain animals are nearly identical. Is it because of similar heritage, or is it because similar genes are used by nearly all species?
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February 8, 2011: How come plants can make essential amino acids but people can't? After all, both need the same amino acids to survive.
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February 3, 2011: I was researching about the similarity in human and chimpanzee and found out that we are not as similar as originally thought...If so, what is man's closest species relative and why do we still differ so much?
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December 15, 2010: I was just watching a program about evolution and was thinking about the many arguments that question the amount of time it would take single-cell organisms to evolve into us. My question is, considering that our brains can signal our bodies to react to infections, conditions, etc., is there any chance that our brains could likewise send a signal programming which genetic traits we'd like to pass on to the next generation?
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July 29, 2010: Is it possible to reconstruct dinosaurs from the DNA samples in amber and bird DNA?
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