Answer:
For a couple of decades, biologists knew the nucleus contained DNA and proteins. The prevailing opinion was that the genetic material was proteins, and not DNA. The reason for this belief was that proteins are more complex than DNA. This is because: <u>proteins have a greater variety of three-dimensional forms than does DNA.</u>
Explanation:
Protiens have a greater variety of three dimensional forms than does the DNA
Protiens contain one or more polypeptides which are usually arranged in one of the following structures :
1)Primary structure
2) Secondary structure
3) Tertiary structure
4) Quaternary structure
These structures are maintained by Hydrogen bonding , Hydrophobic interactions , Disulphide bonds and ionic bonds )
DNA on the other hand is a double stranded molecule containing only hydrogen bonds between the nitrogenous bases and the covalent bonds within nucleotides. It is much simpler than protiens.
Answer:
15.21 %
Explanation:
If we recall the basic formula of Hardy-Weinberg's equilibrium ; we have the following below:
p + q = 1
p² + 2pq + q² = 1
where;
p = frequency of the dominant allele in the population
q = frequency of the recessive allele in the population
p² = percentage of homozygous dominant individuals
q² = percentage of homozygous recessive individuals
2pq = percentage of heterozygous individuals
Given that p= 0.68 and q = 0.39
the percentage of the homozygous recessive genotype (q² ) will be
(0.39)² = 0.1521
= 0.1521 × 100
= 15.21 %
∴ the percentage of the population that has a homozygous recessive genotype = 15.21 %
Nitrogen fixation is the conversion of nitrogen gas into a usable form.
Answer: Solubility in lipids
Explanation:
All the volatile anaesthetic agents has dose dependent respiratory depression VT and MV which may be compensated by increased respiratory rate.
The respiratory depression is more common in case of older people as they cannot compensate for the volume of air.
The solubility of the anesthesia in the lipids can be a risk which can put 85 year old women into respiratory depression.
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