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emmainna [20.7K]
4 years ago
13

When did virus evolve?

Biology
1 answer:
MatroZZZ [7]4 years ago
6 0
Viruses evolve from bits of DNA
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How is the energy trapped by a plant, stored and then released several days later?
m_a_m_a [10]
Using photosynthesis, which consists of a series of chemical reactions that require carbon dioxide and water, and store chemical energy in the form of sugar. Light energy from light drives the reactions. Oxygen is released into the atmosphere as a byproduct of photosynthesis.
<span>This is the equation for photosynthesis: 6 CO2 + 6 H2O → 6(CH2O) + 6 O<span>2</span></span>
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9 one-way streets have unique features including __________.
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One way streets have unique features including all vehicles pointing in one direction.  The street also has no yellow center line marks. A one way street is a street that has either a one way traffic or designed to direct vehicles in one direction and that is why it has those features.
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3 years ago
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red-green color blindness is an x-linked recessive disorder. if the mother is RGCB and the father has normal vision, what are th
victus00 [196]

Answer:

The correct answer would be -

RGCB daughter - 0%

RGCB sons - 100%

Explanation:

Red-green color blindness is a sex-linked recessive disease that means it will only express in absence of the normal allele that is present on X-chromosomes. As it is known that males have only one X-chromosomes therefore, the chances are more in males to be affected in presence of the recessive gene. In this given case women s RGCB and man has normal vision. The genotype of women would be both recessive alleles XcXc and genotype of man would be XY.

The gametes would be - Xc, Xc and X, Y

then the cross:

       Xc     Xc

X     XXc    XXc

Y    XcY      XcY

so the offspring would be -

Carrier female =  XXc (50% chance in total and 100% in daughters)

RGCB daughters = 0%

RGCB male =  XcY (100% in sons and 50% of total children)

5 0
3 years ago
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Katarina [22]

Answer:

wind

Explanation:

8 0
4 years ago
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tino4ka555 [31]

Answer:

-It ensures life on Earth can exist.

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-It is the main component of many biological components, including blood.

Please Mark Brainliest If This Helped!

4 0
3 years ago
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