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creativ13 [48]
3 years ago
15

Natural selection disrupts the _______ because one allele of a gene is preferred over another, changing the allele frequencies o

ver time.
Biology
1 answer:
steposvetlana [31]3 years ago
6 0

genetic drift

Explanation:

Genetic drift is changes in allele frequencies of a gene pool due to chance or random events. This can occur in large or small populations. Genetic drift causes gene pools of two isolated populations to become dissimilar as some alleles are lost and other are fixed.

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The proportions of the bases are consistent within a species; however they do vary between species. Using the base-pair rules, c
Snezhnost [94]

Answer:

The correct answer would be:

                  A         G          C         T

Human:   31          19          19       31

Cow:         28         22      22         28

Salmon:     29       21       21         29

Wheat        27      23        23        27

Yeast         31         19       19         31

Explanation:

According to the rule of Chargaff which states or explains the amount of the A, T, G, and C bases in the DNA molecule. It says that the DNA of any organism should have a pyrimidine and purine ratio of 1:1. This means the amount of A would be equal to T and the amount G should be equal to the amount of C.

It also says that the amount of a and G would be equal to the amount of C and T. So on the base of this we can find the missing value in the table:

                    A         G          C         T

Human:   31          19          19       31   (A= T and G=C)

Cow:         28         22      22         28  (A= T and G=C)

Salmon:     29       21       21         29   (A= T and G=C)

Wheat        27      23        23        27 (100 - A+T = G+C)

Yeast         31         19       19         31 (A= T and G=C)

5 0
3 years ago
Which is a basic unit of a sugar molecule?
NISA [10]
1. <span>C) monosaccharide
2. </span><span>A) uracil (U)
3. </span><span>B) polysaccharide
4. </span><span>A) phospholipids
5. </span><span>C)Their shapes fit snugly together</span>
7 0
3 years ago
The component(s) of india in which tensions continue to boil over border demarcation is
gregori [183]
For the answer to the question above, I believe the answer is Jammu and Kashmir which is located in the Northern state of India. Located mostly in the Himalayan Mountains. It <span>shares borders with the states of Himachal Pradesh and Punjab to the south</span>
4 0
4 years ago
Which of the following advancements in the music industry has preserved
ANEK [815]

The development of electronic delivery systems  advancements in the music industry has preserved  resources and reduced waste.

Option C

<h3><u>Explanation:</u></h3>

Music industry is the industry that deals with the production of new music that are soothing to hear, recording them, spreading them in public and so on. This industry is an age old industry which used to record music in different ways in past. Most of them were not that efficient to capture the individual tunes of the music and moreover they used the resources very inefficiently.  

With the advent of modern day electronic delivery systems, the mics came into market, as well as different electronic media like pendrive, CD's, tape recorders, and even internet through which music can be spread among public very easily.  

5 0
3 years ago
20 POINTS FOR FIRST PART AND 20 POINTS FOR THE SECOND PART
Alexxx [7]
Carbon fixation.<span> A </span><span><span>\text {CO}_2<span>CO<span><span>​2</span><span>​​</span></span></span></span>C, O, start subscript, 2, end subscript</span><span> molecule combines with a five-carbon acceptor molecule, ribulose-1,5-bisphosphate (</span>RuBP<span>). This step makes a six-carbon compound that splits into two molecules of a three-carbon compound, 3-phosphoglyceric acid (3-PGA). This reaction is catalyzed by the enzyme RuBP carboxylase/oxygenase, or </span>rubisco<span>.</span>
7 0
4 years ago
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