In the nucleus, the cell copies the dna blueprint to rna. like dna, rna has four nitrogen bases, but in rna, the base replaces the base thymine.
a - alanine
b- guanine
c- uracil
d- valine

Explain why ecosystem diversity results in species diversity in a healthy biosphere

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

Examine the air pressure map. which type of line is shown on the map?