Carbohydrates are composed of:
A. amino acids.
B. fatty acids and glycerol.
C. nucleotides.
D. monosaccharides.
D. monosaccharides.
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In the Sanger method of DNA sequencing, incorporation of the nucleotides stops because
A) the dideoxynucleotide analogs have no 3'-OH group to continue DNA synthesis. B) the dideoxynucleotide analogs have no 5'-OH group to continue DNA synthesis. C) the dideoxynucleotide analogs have no 2'-OH group to continue DNA synthesis. D) the mixture is heated to 92°C to stop DNA synthesis at specific time intervals. E) the dideoxynucleotide analogs are in greater concentration than the actual nucleotides.
You are a genetic counselor, and a couple comes to you with concerns that if they have a child
together it could have hemophilia. Neither one of them has hemophilia, but the woman's biological father did have an X-linked recessive form of hemophilia. Which of the following would be a correct thing to tell them?
a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia, they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.
Explain why phocids, especially ones living in polar areas, generally have very short lactation periods compared to eared seals
What will be an ideal response?
The spontaneous generation theory of disease was replaced by identifying microorganisms as the cause diseases
a. true b. false