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kirill115 [55]
3 years ago
9

Which of the following best describes how crossing over occurs during meiosis?

Biology
1 answer:
kkurt [141]3 years ago
7 0

Answer:

first give the following options bro..

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In your own words, describe the structure and function of the gastrointestinal tube?
Rus_ich [418]
The gastrointestinal tube is about thirty foot, from mouth to the anus.

The gastrointestinal tube <span>consists of the oral cavity, pharynx, esophagus, stomach, small intestine and large intestine. </span>

The function of the gastrointestinal tube is to breakdown the foods into nutrients, and eliminate waste products.

5 0
3 years ago
Lake Baikal is the oldest and deepest lake in the world. It is found in the middle of Siberia. In Lake Baikal there are 32 speci
cluponka [151]

Answer:

The. Two populations of sculpin lived on Lake Baikal, but a genetic change in one of the populations prevented them from crossing, thus creating a new species of sculpin.

B. The additional information I would use to test the hypotheses would be: 1) is there any species of fish similar to sculpin in the same lake? 2) what is the genetic change presented by the sculpins?

Explanation:

My hypothesis about sculpin fish states that sympathetic speciation has occurred. This speciation occurs when two populations of the same species can no longer promote crossings between them, thus creating an evolutionary process, which results in the creation of two distinct species, in the same habitat. I believe that this type of speciation is more common to happen in aquatic environments and in fish, since these environments present less physical barriers than the terrestrial environment. This usually occurs with the existence of genetic modifications within one of the populations. As a result, to test my hypothesis, I would need information about the existence of species similar to sculpin within the same lake, in addition to knowing what genetic differences between them would promote this type of speciation.

4 0
3 years ago
Imagine you discover a yeast mutant that exhibits a general inability to grow and thrive compared to wild-type yeast. You predic
lapo4ka [179]

Answer:

The answer is all of th above.

Explanation:

Proteins are produced through mRNA which is coded from the DNA copy, and then taken to the ribosomes which produces the actual protein. Whether there is a mistake in the coding of the process does not affect the tRNA or rRNA levels. For the protein levels to be much lower, there needs to be a defect in DNA replication, which leads to the defects of transcription and polyadenylation. So the answer is all of the above.

I hope this answer helps.

4 0
3 years ago
How many organs are there in musculo skeletal system
kykrilka [37]

Answer:

4

Explanation:

The musculoskeletal system is made up of the body's bones (the skeleton), muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together. Its primary functions include supporting the body, allowing motion, and protecting vital organs

6 0
3 years ago
What are primer dimers
user100 [1]

Answer:

I have no clue buddy, look it up:)

5 0
3 years ago
Read 2 more answers
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