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DerKrebs [107]
3 years ago
14

why is it said that natural selection acts on phenotypes rather than on the genetic material of an organism?

Biology
1 answer:
Phantasy [73]3 years ago
4 0

It is said because it doesn't change the genetic material, but the outside of the animal when the species slowly adapts to it's surroundings and predators.

Example: A group of 10 birds are in a forest. One of the birds has a short, stubby beak, and another 3 have long, thin ones. The rest of them are normal. If the only food left after a natural disaster was flower nectar, then the 3 with the long, thin beaks would survive, and the other birds, poorly adapted for this outcome, would not live.

It doesn't actually change the genetic makeup of an organism but may slowly alter it's entire gene pool over time.

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How are photosynthesis and cellular respiration similar
djverab [1.8K]

Answer:

chlorophyll in the leaves transform CO2,H2O and minerals into O2 and C6H12O6. Photosynthesis take place in the chloroplasts of the cells.... cellular respiration,on the other hand ,is the process by which living things convert oxygen and glucose to carbon di oxide and water , thereby yielding energy

Explanation:

5 0
3 years ago
Photosynthesis and cellular respiration are considered opposites. why?
motikmotik
Because Photosynthesis is the process used by plants and some bacteria to create energy from sunlight. ... Cellular respiration uses glucose, or sugars, from food molecules and turns them into carbon dioxide.
Hope that helped!
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A 52 yera old presents with bleeding from the rectum. this condition is referred to as
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3 years ago
Summary of hearing: Vibrations cause the cochlea’s membrane to shake. This causes ripples in the ____________, bending the _____
mash [69]

Answer:

1) Basilar membrane

2) Stereocilia or hair cells

3) Nerve cells

4) Auditory

5) Temporal lobe

Explanation:

Basilar membrane: located inside of the cochlea which is located in the inner ear. This membrane separates two tubes that is filled with liquid which is also important for hearing.  

Hair cells: Connected to the basilar membrane and they acts as sensory receptors which can catch movements (ripples) in the basilar membrane and pass this message to the neurons.

Nerve cells: One of the main cell types in the brain, which are responsible for signal transfer.

Auditory cortex: This part of the brain is located in temporal lobe and handles the auditory information.

8 0
4 years ago
Describe the three stages of cellular respiration and identify the part of the cell in which cach
RUDIKE [14]

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Explanation:

3 0
3 years ago
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