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Shalnov [3]
3 years ago
15

What is refraction? what does it mean when we say that light is refracted as it enters the eye?

Biology
1 answer:
Papessa [141]3 years ago
4 0
Usually refraction describes a wave as it enters a second medium of lighter/heavier density , which makes the wave bend towards or away from the normal line ( ex light waves from air to water ) . the eye's property is that it has different parts with different refraction indexes ( simply put , thickness) which makes the light that enters it to refract 
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7 0
3 years ago
Helppp, i’m going to fail:(
Westkost [7]
Don’t worry this is pretty easy :)

The answer is -
50% recessive alleles
50% dominate alleles

explication- find out what alleles you’re working with (heterogeneous and homogeneous)
[heterogeneous is 1 dominant and 1 recessive- homogeneous is 2 of the same alleles they can be dominant or recessive]
We’re working with a parent with heterogeneous and another parent with recessive homogeneous.

draw a allele chart
__
|_|_|
|_|_|
they look like this and take your first parents alleles and put them at the top

L s
_ _
|_|_|
|_|_|

it should look like this, then take your parent with both recessive and put them vertical to the box

L s
_ _
s |_|_|
s |_|_|

it should look like this, now you drag one letter down and one letter across for each box

L s
__ __
s|Ls|ss |
s|Ls|ss |
— —
it’s should look like this when they’re done, i think you’re doing a grade below me in biology so the ratio should be 50/50 for both phenotype and genotype.

TRY TO LEARN THE VOCABULARY IT HELPS A LOT AND BASICALLY TELLS YOU THE ANSWERS!
GOOD LUCK :)
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3 years ago
How fluid pressure from freshwater helps plants to stand upright?
aleksklad [387]
Its called central vacuole
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2 years ago
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