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krok68 [10]
3 years ago
15

Which type of selection leads to increased phenotypic and genetic variation? directional selection disruptive selection stabiliz

ing selection species selection Jezelyn needs to create a project that shows reproductive isolation in action and decides to make a video. Which of the following would make the best project? a video that shows a large river that has penguin populations on both sides a video that shows penguin species that have different mating dances a video that shows a penguin that is laying eggs a video that shows penguins in a tidal pool and an open ocean
Biology
1 answer:
kkurt [141]3 years ago
4 0
The correct answer for the question that is being presented above is this one: "A. a video that shows a large river that has penguin populations on both sides."

Here are the following choices:
<span>A. a video that shows a large river that has penguin populations on both sides
B. a video that shows penguin species that have different mating dances
C. a video that shows a penguin that is laying eggs
D. a video that shows penguins in a tidal pool and an open ocean</span>
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How are the chromosomes different in the cancer cells compared to normal cells?
gladu [14]

Answer:

Genomic Instability

Explanation:

Normal cells have normal DNA and a normal number of chromosomes. Cancer cells often have an abnormal number of chromosomes and the DNA becomes increasingly abnormal as it develops a multitude of mutations.In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.

3 0
3 years ago
Menstrual flow results in the discharge of select one:
agasfer [191]
C. the endometrial lining of the uterus
8 0
4 years ago
Why does tempreture increase when the amount of carbon dioxide or methane in the earth system increase?
grandymaker [24]
Carbon dioxide controls the amount of water vapor in the atmosphere and thus the size of the greenhouse effect. ... This means that Earth's temperature will increase at least another 0.6 degrees Celsius (1 degree Fahrenheit) because of carbon dioxide already in the atmosphere
5 0
3 years ago
Write a paragraph on how Blood Glucose goes with Negative Feedback
vagabundo [1.1K]

Answer:

Here are some explanations from 0nline so if you want rewrite in your own words

hope this helps  :))

blood glucose-

"The control of blood sugar (glucose) by insulin is a good example of a negative feedback mechanism. When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels."

"If the blood glucose level is too low, the pancreas releases the hormone glucagon. This travels to the liver in the blood and causes the break-down of glycogen into glucose. The glucose enters the blood stream and glucose levels increase back to normal. This is an example of negative feedback."

body temperature-

" Body temperature is regulated by negative feedback. The stimulus is when the body temperature exceeds 37 degrees Celsius, the sensors are the nerve cells with endings in the skin and brain, the control is the temperature regulatory center in the brain, and the effector is the sweat glands throughout the body."

"Body temperature is controlled by the hypothalamus in the brain. If the hypothalamus detects that the body is too hot, the response is that the body begins to sweat to try and reduce the temperature back to the correct level."

"Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances."

"Negative feedback brings a system back to its level of normal functioning. Adjustments of blood pressure, metabolism, and body temperature are all negative feedback"

7 0
3 years ago
Which of these is a piece of evidence supporting the theory of evolution?
nikklg [1K]

Answer:

The correct answer is option A.

Explanation:

Emus are flightless birds that are native to the African part of the geological location. It is the second largest bird on the planet that can not fly but run very fast.

They show similarities with their Australian cousin ostriches. Ostriches are found in Australia, these are the largest bird on the planet. These are also flightless birds and run up to 45 MPH.  

Thus, the correct answer is option A.

7 0
3 years ago
Read 2 more answers
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