Which of Steno’s principles is responsible for the thin undisturbed layers found in the Grand Canyon?

Biology

2 answers:

erik [133]2 years ago

7 0

I think it might be either A Or B

Allisa [31]2 years ago

3 0

The right option is; C.principle of original lateral continuity

Principle of original lateral continuity is responsible for the thin undisturbed layers found in the Grand Canyon.

The principle of lateral continuity states that layers of sediment are originally deposited laterally in all directions. This means that layers of sediment are laterally continuous. For this reason, rocks that are similar but are now divided by any erosional feature such as a valley can be surmised to be continuous initially.

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Males have hemophilia when they are hemizy-gous for a nonfunctional recessive mutant allele of the X-Iinked gene for clotting fa

ruslelena [56]

Answer:

a. No, it is not possible.

A heterozygous female carries one copy of functional gene which is enough for the production of clotting factor. Hemophilia does not show continuous variation or polygenic inheritance and thus, its level does not depend on the number of normal alleles.

It that was the case, then all males would show hemophilia in some parts of the body as they only carry one X chromosome and thus, only one functional gene.

Thus, heterozygotes are only the carriers of the disease, they do not show any symptom of the disease.

b. In perspective of homozygosity or heterozygosity, the rate of blood clotting should be the same as both of them have functional gene. As mentioned above, it does not show continuous variation so, it will not show any increased or decreased rate of clotting in homozygotes or heterozygotes.

However, in reality, the rate of clotting depends on the concentration of clotting factor present in blood plasma. This percentage depends on the physiology of a person but not on the number of alleles present. For example, proteins or enzymes required for gene expression, et cetera.

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2 years ago

1. Why does a change in the structure of a protein matter?

irina1246 [14]

Answer:

B. a mutation to the mRNA transcribed from it

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David sustained a complete avulsion of his hamstring tendons from their origin on the ischial tuberosity. what classes of lever

m_a_m_a [10]

The hamstring muscles are considered as third class lever system.

Third class levers are the type of lever in which the applied force is situated in between the load and the fulcrum. In this case, the load is near the foot while the fulcrum is the ischial tuberosity and the applied force is on the hamstring muscles which are in between the two.

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3 years ago

Dna may be altered as a result of ________ events that occur normally in cells

adoni [48]

Transcriptional events possibly ?

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After a successful launch and return of a rocket, NASA and SpaceX noticed a strange gel like substance on the wing. Under the mi

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nonliving the heat from the hot plate is causing the gel like substance to move it's the same thing with liquid nitrogen how it seems to bounce off the floor it's because liquid nitrogen is super cold and the heat basically excites the electrons in the liquid nitrogen making it bounce off the floor same with the gel like substance the electrons in the gel substance are getting excited by the heat and jumping up and down but the substance itself is not alive

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2 years ago