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Elina [12.6K]
3 years ago
8

What is the difference between directional selection and disruptive selection

Biology
1 answer:
morpeh [17]3 years ago
8 0
Directional selection is where one phenotype is favored, so an example would be "a population of madagascar hissing cockroaches suffers heavy predation from lizards. Because their heads are small, the lizards are unable to eat the very largest adult cockroaches, and instead prey upon small and medium sized adults, so as a result the large cockroaches are favored and live". 
Meanwhile, disruptive selection is where both extreme phenotypes are favored, an example would be "a population of rabbits can have black fur, white fur or grey fur. This population of rabbits lives in an area of white rocks. When a local volcano erupts, black volcanic rock now dots the landscape amongst the white rocks. Now the black and white rabbits live longer because the black and white spots on the landscape camoflauge them. The two extreme phenotypes are being favored."
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Which of the following demonstrates an organ providing a force?
IRISSAK [1]

Answer:

I would say the answer would be: 2. The heart contracts and expands to move blood.

Explanation:

The heart is forcing itself to contract and expand so it can move blood throughout the body. If I am wrong, let me know, but I believe that this is correct since it's a function of force.

3 0
3 years ago
I don't understand this can someone plz do an example for me
aleksley [76]

Answer:

Physical geography is the branch of natural science which deals with the study of processes and patterns in the natural environment such as the atmosphere, hydrosphere, biosphere, and geosphere, as opposed to the cultural or built environment, the domain of human geography.

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In-s [12.5K]
First answer is A
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Please help.................
bazaltina [42]

Answer:

C i think.......................................

5 0
2 years ago
What name is given to the most common phenotype in a natural population?
Artemon [7]

Answer:

The correct answer would be d. wild-type.

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For example, the wild-type phenotype of fur color of tigers is orange with black strips whereas the mutant phenotype would be a white coat with black strips.

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