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nlexa [21]
3 years ago
14

At the beginning of DNA replication, what two processes "unzip" the two strands of a DNA molecule?

Biology
2 answers:
vagabundo [1.1K]3 years ago
8 0
Replication from formation and separation of the strands
DiKsa [7]3 years ago
5 0
At the beginning of DNA replication, what two processes "unzip" the two strands of a DNA molecule?
Transcription and replication
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What is the effect of uneven heating of the earth's surface on the environment ​
zhannawk [14.2K]

When people speak about convection, they are usually referring to the uneven heating that occurs on the surface of the earth.

Consequences of an inconsistent heating system:

Because of the disparity in temperature distribution, certain areas of the environment are hotter than others, and there are also shifts in volume and tension as a result.

It generates updrafts, which in turn may lead to thunderstorms and other types of severe weather.

The Earth has moved slightly on its axis.

Because the sun's rays are directed directly at the equator, the temperature there is higher than in other parts of the planet.

As you approach farther north or further south of the equator, they drop down in an incline or at an angle.

Because of this, the temperature of the earth is uneven, which in turn shapes the wind and the flow of the sea and makes it possible for life to exist.

To know more about thunderstorms click on the below link:

brainly.com/question/6838263

#SPJ4

3 0
1 year ago
In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are expected from a cross between
irga5000 [103]

Answer:

Answer:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair          3/4

ss                  1/4          Long hair          1/4

Explanation:

Both are heterozygous for the trait so we can expect that the cross would be:

Ss x Ss

   S     s

S  SS   Ss

s   Ss   ss

So the resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair:  1/4

So in summary:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair        

ss                  1/4          Long hair          1/4

Explanation:

7 0
3 years ago
In humans, brown eyes are dominant over blue eyes. Suppose a blue-eyed woman has children with a brown-eyed man whose mother was
Agata [3.3K]

Answer:

There is a 50% chance their child will have blue eyes.

4 0
2 years ago
What is the percentage of calories were absorbed by your system??? Helpppp
denpristay [2]
Calories in and of themselves aren't a reliable way of describing energy density in food. It doesn't reflect what actually happens in your body (look up bomb-calorimeter for how people figure out calorie content in foods). So based on this, the question is a bit of a non-sequitur. But if you disregard that and go with a regular answer, it really depends on what kind of calories you're ingesting because foods get digested in a function of different amounts of time. Carbohydrates will get digested and converted into glucose almost immediately - being very close to 100% energy efficiency. Fats are the slowest as your body needs to produce bile in order to digest it - not enough bile = undigested fat = unused calories. Proteins are turned into either amino acids (not an energy source per se) or converted into glucose like carbs but instead through gluconeogenesis which is a less efficient form of glucose conversion than carbohydrates (since your liver/kidneys need to produce the enzymes to convert it). The efficiency of protein is likely in the range of 50-60% calories. This is just the tip of the iceberg though - your metabolism also plays a part as to how much and when these calories are either used, stored, and excreted by your body. Ever got the meat sweats? That's your body burning excess energy through thermogenesis when you eat too much protein. So it really depends why you're asking because the answer will differ for each scenario.
3 0
3 years ago
What are the different systems of classification of organisms
Tanya [424]

Answer:

Kingdom, phylum, class, order, family, genus, and species.

Explanation:

The science of classifying living things is called taxonomy. Linnaeus introduced the classification system that forms the basis of modern classification. Taxa in the Linnaean system include the kingdom, phylum, class, order, family, genus, and species. Linnaeus also developed binomial nomenclature for naming species.

4 0
2 years ago
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