There is evidence that life existed about:a
3.5 billion years ago.
b. 2 billion years ago.
c. 1.3 billion years ago.
d. 630 million years ago.
e. 250 million years ago
A
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Some proteins that bind to DNA block transcription, whereas other proteins can activate transcription
Indicate whether the statement is true or false.
Using actual landmarks within DNA sequences, scientists can generate a _______ map.
A. genetic B. DNA C. physical D. chromosomal
Four of the five answers listed below are related by a common phase of mitosis. Select the exception
a. chromosomes align at the spindle equator b. sister chromatids become individual chromosomes c. centromeres divide d. the chromosomes move apart e. spindle microtubules shorten, pulling chromosomes toward the poles
What is a feature that puts Archaea more closely related to Eukaryotes?
A. They both have plasma membranes with fatty acids B. They both have circular chromosomes C. They both have similar transcription and translation machinery D. They both have peptidoglycan in their cell walls