If a cell has a diploid number 2n=46, then how many chromosomes does it contain? how many pairs of chromosomes? how many chromosomes would you find in a haploid cell from this organism?

What was the land like over 500 million years ago? what was under the sea?

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.