DNA strands are made of a double helix combined by hydrogen bonds.
Answer:
RNA polymerase creates mRNA when it is is in the starter called Positive transcription factor 5. What does the “mRNA destroyer” do? It destroys the mRNA when there is enough mRna 6. ... Negative transcription doesn't allow mRNA to produce more 7.
Explanation:
Answer:
carbon dioxide that enters through the leaf
openings
Explanation:
Importance:
Oxygen is the third most abundant element and constitute about 21% of the gases in earth's atmosphere. It is a key for generating energy in cellular respiration. In aerobic respiration, electron release in electron transport chain is culminated by oxygen, result into the production of chemical energy.
Oxygen obtained by human:
Human obtain oxygen through respiratory system by applying partial law of diffusion.The partial pressure of oxygen in atmosphere is higher than inside lungs, so oxygen move into lungs in exchange for carbon dioxide.
Oxygen obtained by flatworms:
Oxygen obtained by ferns:
Answer:
TTppRR will produce TpR gametes. ttPPrr will produce tPr gametes.
Explanation:
Let us assume:
Normal tail : T, Tail less : t, Pale skin : P, Dark skin : p, Smooth skin : R, Rough skin : r
A pure-bred normal tail, dark skin, smooth skin mouse and a pure-bred mouse that is tail-less, pale skin, and rough skin crossed together then,
TTppRR x ttPPrr
One allele from every gene comes in a gamete thus, TTppRR will produce TpR gametes. ttPPrr will produce tPr gametes.
