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Lelechka [254]
3 years ago
15

The following concepts led to the hypothesis that DNA has a double helix structure:

Biology
1 answer:
Maslowich3 years ago
7 0
I and III.

Chargaff's law and Rosalind Franklin's discoveries
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Jeremy is observing a cross-section of a corn stem under the microscope. He observes that there is no vascular cambium present i
BaLLatris [955]
This is because it is a monocot and monocots do not have a vascular cambium in their stems.
3 0
3 years ago
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some heterozygous alleles create variations in expression so that there is not a clear dominant or recessive allele true or fals
Simora [160]

Answer: False

 The variations in expression depends on how genes code for proteins that would specify whether it will be dominant or recessive allele.   Within a population, there may be a number of alleles for a given gene and these differences can cause variations in the protein that is produced. The change in protein expression affect traits due to the variations in protein activity or expression that produce different phenotypes.

<span>Moreover, individuals that have copies of different alleles are known as heterozygous and individuals that have two copies of the same allele are referred to a homozygous. The expression patterns observed in inheritance will depend on whether the allele is found on an autosomal chromosome or a sex chromosome, and on whether the allele is dominant or recessive.</span>

 

7 0
3 years ago
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Which is not part of a neuron? <br>A. dendrites <br>B. axon <br>C. actin sheath <br>D. nucleus​
nata0808 [166]

C. actin sheath

This is the answer.

3 0
3 years ago
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Disturbance destroying an area through the climax of ecological succession
kotykmax [81]

Answer:

hope this helps

secondary succession

Explanation:

Large, low intensity disturbances, such as plowing in conventional agriculture, result in moderate amounts of succession, where species can survive in the soil and quickly recolonize areas after a disturbance. This type of succession is often called secondary succession

4 0
3 years ago
Which statement is the most accurate outcome criteria for the nurse to use when determining if a patient is responding appropria
BabaBlast [244]

Answer:

The statement that will show the best accurate criteria is patient's respiratory rate is 16 breaths/minute and blood pressure is 130/72 mm Hg.

Explanation:

Adrenergic drugs are drugs that cause the stimulation of the sympathetic nervous system, which is also known as adrenergic nervous system by performing or mimicking the activities of the epinephrine and norepinephrine, or interfering with their release.

It should be noted that, epinephrine and norepinephrine are also known as adrenaline and noradrenaline, this is because they are secreted by the adrenal gland, and this gives rise to the term adrenergic.

Examples of adrenergic drugs are phenylephrine, clonidine and oxymetazolin among others.

6 0
3 years ago
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