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Elan Coil [88]
3 years ago
12

John and jane are planning a family, but each has a brother who has sickle-cell disease, so they are concerned that their childr

en may develop sickle-cell disease. neither john nor jane nor their respective parents have the disease. they consult a genetic counselor who tells them that __________.
Biology
1 answer:
Gemiola [76]3 years ago
7 0
The answer would be: it's possible that none of their children will have the disease, but blood tests on them both will be required to make sure

Sickle-cell disease is a disease that affects red blood cells that inherited in an autosomal recessive pattern. It is possible to get the disease from both normal phenotype parent if they both are homozygotes. To make sure, a blood test will be needed,
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what structure in a cell could transport material across the membrane, against the concetration gradient?
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Active transport could transport material across the membrane against the concentration gradient
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3 years ago
Ent var
jok3333 [9.3K]

Answer: Oxygen

Explanation:I hope it helps . i have breifly explained it .

Oxygen gas is one of the products of photosynthesis.

Which reactant is the source for oxygen gas and how is it released?

A .

Water, released when sunlight splits it into oxygen and hydrogen ions

B .

Glucose, released when glucose is broken down into carbon dioxide gas, oxygen gas and water

C .

Carbon dioxide, released when sunlight splits it into carbon and oxygen gas

D .

Electrons, released when they strike the chloroplasts

Green plants capture energy and convert it into chemical energy by the process known as photosynthesis. During photosynthesis, carbon dioxide and water are transformed into simple carbohydrates and oxygen is liberated into the atmosphere.

light

6CO2 + 12H2O ----------------> C6H12O6 + 6O2

chlorophyll

Water is also used as a source of hydrogen required for reduction of carbon dioxide to form carbohydrate.

Water is oxidised in presence of light and chlorophyll. Hydrogen is removed from water and oxygen is released as follows:

light

4‎H20 ---------------> 2‎H20 + 4H+ + 4e− + O2

chlorophyll

or,  

2‎H2O ----------------> 4H+ + 4e− + O2

Hence the source for oxygen gas is water and it is released when water splits in the presence of sunlight into oxygen and hydrogen ions.

So, the correct answer is 'Water, released when sunlight splits it into oxygen and hydrogen ions'.

4 0
3 years ago
Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure cal
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10 chromosomes. After telophase and cytokinesis, the new daughter cells will each have 10 chromosomes, which is identical to the parental cell. Human cells have 23 pairs of chromosomes.
6 0
2 years ago
I NEED HELP QUICK
ArbitrLikvidat [17]
It’s either b-transference or d-translation.
But I believe it is translation (d)
Hope this helped :)
5 0
2 years ago
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The pop-up questions at the end of this level ask whether a banana is more closely related to a lemon or an onion. Why might the
Marysya12 [62]

Answer:

The reason why the final answer may be surprising to a lot of people is that

Onion is not a fruit, it is a vegetable while banana is a fruit; likewise, lemons and they are both yellow fruits.

Because they are both yellow fruits, one may have the thought that a lemon and a banana are more closely related.

It may also be confusing to lots of people because some plants that produce vegetables are more closely related to plants that produce fruits and it goes vise versa.

7 0
3 years ago
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