Where do daughter cells obtain their dna?
1. from the duplicated chromosomes in the nucleus of the parent cell
2. from inheriting 10% of the parent cell's genetic material
3. from all of the original parent chromosomes during cell division
4.from the splitting of the cytoplasm in cytokinesis

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d