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deff fn [24]
3 years ago
14

In your own words, explain natural selection and include an example

Biology
1 answer:
miskamm [114]3 years ago
7 0
Okay, this has to be in your own words, but I will tell you this. Natural Selection is living organisms that have adapted to the environment which surrounds them leading the the producing of offspring. Example, bugs are eaten by frogs and frogs are eaten by snakes and snakes are eaten by birds.
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When RNA is processed in the nucleus and made ready for transfer out into the cytoplasm for protein synthesis, which of the foll
IRISSAK [1]
Answer:
Letter E - exons are cut from the strand and removed

Explanation:

Letter A and B are incorrect because the poly-A tail and guanine cap are added to the 3’ and 5’ end respectively. They aid in translation of the mRNA, while serving as protection. The poly-A tail is repeated adenine nucleotides, while the guanine cap is a modified guanine nucleotide.

Letter C is incorrect because alternative splicing is one mechanism for generating variation, and is thought to be one of the reasons for why humans have smaller genomes than other organisms and still maintain high complexity. Alternative splicing is incredibly important because it produces more than one transcript from a pre-mRNA.

Letter D is incorrect because introns are the non coding portions of the mRNA. They are excised to make a smaller mRNA transcript, and one that contains all the protein genes.

This letter E is the correct answer, because exons are the coding portions of the mRNA, and are not excised during RNA processing.

Hope that helped! If I made a mistake, please let me know.
8 0
3 years ago
Although there is scientific evidence and many scientific theories about the origin of the universe, how it all happened remains
MrMuchimi
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3 years ago
Describe the complications that occur most frequently during calving, and recommend the best practices for assisting cows during
IceJOKER [234]

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Calving difficulty, technically called dystocia, is a major cause of death loss in cow-calf herds.

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6 0
3 years ago
You are looking through a microscope at a cell in a phase of cell division. you see a double row of chromosomes lined up at the
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The cell is in METAPHASE PHASE OF MEIOSIS.  At this phase, the pairs of homologous chromosomes moves to the cell equator. These pairs of homologous chromosomes will be separated in anaphase I. The number of chromosomes remains constant until the first cell division is completed, then the chromosomes will be divided into two daughter cells. 
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2 years ago
Can you list some facts about Food webs.
Novosadov [1.4K]

Answer:

A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.

Explanation: A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.

7 0
2 years ago
Read 2 more answers
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