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Elena L [17]
3 years ago
10

Which factors are associated with keloid formation?

Biology
1 answer:
kykrilka [37]3 years ago
3 0
IDOT KNOPQ THIS BUT WE WEILL FICN NIT 
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Species a diverged from species b 60,000 years ago. On a particular gene, they have 15 nucleotide differences. How many nucleoti
a_sh-v [17]

The given question says that b species diverged around 60,000 year ago from species a. Since the divergence, they have a nucleotide difference of 15 nucleotide.

We need to find out the nucleotide difference in another 240,000 year, which means a total of 300,000 year since divergence.

The nucleotide difference in 60,000 years = 15 nucleotide.

The nucleotide difference in 1 year =\frac{15}{60,000}  nucleotide.

The nucleotide difference in 300,000 years = \frac{15}{60,000}\times 300,000 nucleotide.

The nucleotide difference in 300,000 years = 75 nucleotide.

Hence, after another 240,000 years or 300,000 years since divergence, the species and species b would show a difference of 75 nucleotide.

In another 240,000 years, there would be 60 nucleotide difference, as 15 of the nucleotide are already different in initial 60,000 years from the total of 75 nucleotide difference in 300,000 years. So, 60 (75-15) nucleotide difference would be observed in next 240,000 years.


4 0
3 years ago
Why is it important to avoid planting the same crop in the same field year after year
4vir4ik [10]
Planting the same crop in the same place each year zaps nutrients from the earth and leaves soil weak and unable to support healthy plant growth. Because soil structure and quality is so poor, farmers are forced to use chemical fertilizers to encourage plant growth and fruit production.
6 0
3 years ago
The study of groups of organisms belonging to the same species living together is called.
vekshin1
Answer: population
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3 0
3 years ago
Read 2 more answers
Compare and contrast meiosis with mitosis
Rasek [7]
Meiosis<span> has two rounds of genetic separation and cellular division while </span>mitosis<span> only has one of each. In mieosis </span><span>homologous chromosomes separate leading to daughter cells that are not identical.in </span>mitosis<span> the daughter cells are the same to the parent as well as to each other hope it helps 
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4 0
3 years ago
In flowering plants, plasmodesmata are narrow channels through cell walls that connect the cytoplasms of adjacent cells. AN expl
tatiyna

The plant cells communicate across cell walls through Plasmodesmata.

how do plant cells communicate across cell walls?

  • Between tiny channels woven through the walls of neighboring plant cells, plant cells can communicate with one another through channels referred to as plasmodesmata.
  • These channels enable chemicals to move freely between cells, allowing plants to grow regularly and form tissues and organs.
  • However, plasmodesmata also act as entryways that viruses can employ to infect an increasing number of cells.
  • Given these advantages and disadvantages, plants must balance the permeability of their plasmodesmata in order to move materials from one cell to another while preventing the spread of infection.

Learn more about the Plasmodesmata with the help of the following link:

brainly.com/question/6220658

#SPJ4

6 0
2 years ago
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