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Anna71 [15]
3 years ago
8

What does the notation Rr mean to geneticists?

Biology
1 answer:
Elden [556K]3 years ago
6 0
That a person is heterozygous for a certain trait. Rr=heterozygous and RR= homozygous. You can remember this because Hetero= different and homo= same
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Surface area is an important factor in limiting cell growth because
julia-pushkina [17]

Surface area is an important factor in limiting cell growth because

a. the cell can burst if the membrane becomes too large.

b. materials cannot enter the cell if the surface is too large.

c. the cell may become too large to take in enough food and to remove enough wastes.

d. waste products cannot leave the cell if the cell is too small.

Answer:

c. the cell may become too large to take in enough food and to remove enough wastes.

Explanation:

The exchange of substances with surroundings is done by cells by the process of diffusion. The rate of diffusion of substances requires the presence of a higher surface area than volume. As the cells become larger, their surface area is reduced with respect to the volume. Therefore, larger cells can not support the diffusion of substances in and out as required for its proper functioning. If cells are allowed to grow continuously, they will not be able to intake the requires materials such as food and to release the waste outside.

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3 years ago
Would you expect a region of the body with greater sensory acuity to have cutaneous receptors with large receptive fields, or sm
AfilCa [17]

Yes! a region of the body with greater sensory acuity to have cutaneous receptors with large receptive fields, or small receptive fields.

The sensory receptor located in the skin is known as a cutaneous receptor ( the dermis or epidermis). The somatosensory system includes them. Mechanoreceptors (pressure or distortion), nociceptors (pain), and thermoreceptors are cutaneous receptors (temperature). The lowest spatial resolution is found in the thigh and calf area, whereas the fingertips have the highest spatial resolution (and the smallest receptive fields) (and largest receptive fields). Two-point discrimination threshold measurements can be used to assess the spatial resolution in response to light touch stimuli.

learn more about thermoreceptors brainly.com/question/3524712

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2 years ago
Summarize how urine forms in the kidney.
nordsb [41]
The kidneys filter any unwanted wastes from the body.<span> The glomerular filtration, reabsorption, and secretion take out any wanted fluids from your body when you drink water.</span>
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3 years ago
during a 30 year period a severe drought occurred in three separate years according to this information what is the yearly frequ
mart [117]
During a 30 year period, the yearly frequency of drought is 10%, which is experienced in three separate years.
Additionally, drought is a period where precipitation is below average and thus resulting in prolonged shortages of water supply as far as both ground and surface water are concerned. This can last for several months or even for years.
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15 points Explain the importance of ecosystem stability and include a description of an ecosystem that has become unstable?
stealth61 [152]

Answer:

The importance of ecosystem stability is that if the ecosystem is not stable then it cannot survive. A current example of an unstable ecosystem in the Amazon Rain forest. It has been delt so much damage that it is begining to self destruct and kill itself as well as emit greenhouse gases instead of slowing them.

Explanation:

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3 years ago
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