<span>The correct answer is: [E]: "secretion and reabsorption" .
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<u>Note</u>:
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Among the answer choices provided:
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[A]: filtration ;
[B]: secretion ;
[C]: reabsorption;
[D]: filtration, secretion, and reabsorption ;
[E]: secretion and reabsorption ;
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Answer choice: [E]: "secretion and reabsorption" [only] ;
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</span>→ <span> are the steps in the [process of urine formation] that occur in the "renal tubule" .
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Answer:
The correct answer is
(b)-Chromosomes are made up of protein and nucleic acid.
(c)-Genes are located on chromosomes.
(d)Chromosomes are found in the nucleus.
Explanation:
DNA coils around a protein molecule present inside the nucleus to form a compact structure called chromosomes. These histone proteins have a positive charge and it neutralizes the negative charge of the DNA.
By 1940 it was known by scientists that chromosomes are made up of protein and nucleic acids and chromosome carries the genetic material but at that time it was thought that protein part of the chromosome is the genetic material.
Then Hershey and Chase experiment in 1952 proved that DNA is the genetic material. Mendel first discovered that traits pass from one generation to another as separate factors. Later the word factor converted into gene in 1909 by Wilhelm Johannsen.
So by 1950, it was known that Chromosomes are made up of protein and nucleic acid, Genes are located on chromosomes, and Chromosomes are found in the nucleus.
Answer:
- Dry climates do not have sufficient <u>moisture</u> during most of the year.
- Deserts are located in the <u>arid</u> climate.
- The <u>temperate</u> climate is in a grassland, or steppe, region.
Explanation:
Desert climate develop when the rate of evaporation is extremely higher than the rate of precipitation. This means that the moisture content would be very low in most of the times of the year. Hence, in the long run, the climate will become semi-arid to arid.
On the other hand, temperate climates reflects the conditons of moderate rainfall that spreads across the year or most time of the year. Usually, temperate climate has sporadic drought, mild to warm summers and cool to cold winters. These conditions are enough supporting to produce grasslands, or steppe.
Answer:
Radiation leads to mutations that causes genetic drift and decrease fitness.
Explanation:
Radiation is responsible for changing or altering the DNA sequence within a cell.
Radiation either causes mutation or it leads to cell death.
Most of the ionizing radiation causes mutation within the deep inside of our cells which eventually leads genetic drift which means change in the frequency of the allele in a population over time.
Beneficial mutation confer advantage to the organism. But in this case, the mutation is not beneficial and decreases the fitness of the rodent organisms.
Explanation:
<h3>for example:- </h3>
If a mutation led to brighter feather colouring in birds, the brighter feathers may allow those individuals with the mutation to reproduce more frequently, because they are seen as being more attractive and a desirable mate.