Histone modification: a. can change over time in response to environmental cues, but this has no effect on gene expression. b. is fixed; once a histone is modified, it stays that way and the genes with which it is associated are turned on or off permanently. c. is random; sometimes the lysines are are modified and sometimes they're not, but the state is independent of the environment or cell type. d. is fixed, but this has no effect on whether genes are expressed. e. can change over time in response to environmental cues, allowing genes to be turned on or off as needed.
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Biology, 21.06.2019 18:30, rebecca52360
What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination
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Biology, 21.06.2019 20:00, kiki3002
Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.
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Biology, 21.06.2019 21:30, BigGirlsTheBest
Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1
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Biology, 22.06.2019 02:00, iixyloa
Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.
Answers: 3
Histone modification: a. can change over time in response to environmental cues, but this has no eff...
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