There are 6 levels of organisational structure of the human body...
1. Chemical level
2.Cellular level
3. Tissue level
4. Organ level
5. System level
6. Organismal level
Highest level is organismal.
I think the answer is C Spiral, I haven't learned this since 5th grade though so I might be wrong.
Answer:
The possible genotype of this cross is RW
Explanation:
This question involves a single gene coding for radish color. The allele for red radish (R) is incompletely dominant over the allele for white radish (W), hence, a third intermediate phenotype is formed when they combine (RW).
In this cross, a pure-breeding red radish (RR) is crossed with a pure breeding white radish (WW) to create the F1 offspring. The red radish will produce gametes R while the white radish will produce gametes W, hence, using a punnet square (see attached image), the F1 offspring will have the genotype: RW.
some bacteria called nitrogen fixers convert atmospheric nitrogen to ammonia
Don't smoke
stay away from x rays
no excessive exercise