Which of the following predictions could you make about a cell in which the HP1 protein was disabled?
A) Methylation of DNA would increase.
B) All of the cell's chromosomes would be completely condensed into heterochromatin.
C) Histone methyltransferase would bind to chromatin more easily.
D) Heterochromatin would not be formed.
D) Heterochromatin would not be formed.
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Which DNA repair mechanism uses DNA-N-glycolases?
A. Recombinational repair B. Direct repair C. Base excision repair D. Mismatch repair E. Nucleotide excision repair F. Nonhomologous end joining (NHEJ)
Black widowbirds can be described as medium-sized birds with orange and white shoulders
and showy tail feathers. This is __________.
a. their phenotype b. a description of their adaptations c. their genome d. an example of their alleles
Plant cells have a ridged cell wall. How do plant cells expand, and how important is cell expansion to plant growth?
What will be an ideal response?
Which stage of cell respiration makes the majority of ATP?
A. fermentation B. Krebs cycle C. glycolysis D. electron transport chain E. They all produce the same amount.