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tekilochka [14]
3 years ago
12

Explain why humans gametes have 23 chromosomes

Biology
1 answer:
PtichkaEL [24]3 years ago
6 0

error loading answer

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Describe the shape of the planarian. Was there a difference between the two ends of the planarian?
denis-greek [22]
Planarian<span>, </span><span>any of a group of widely distributed, mostly free-living flatworms of the class Turbellaria 
These are elongated and ciliated
Mouth is middle of the body
hope it helps</span>
4 0
3 years ago
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In the biology lab, you have just finished a dissection, you should do all of the following EXCEPT?
photoshop1234 [79]
In the biology lab, you have just finished a dissection, you should do all of the following EXCEPT Wrap your specimen in the original wrapping and give to your instructor to dispose of. Thank you for posting your answer here. I hope it helps. 
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A man of unknown genotype has type B blood, his wife has type A blood (also unknown genotype). List ALL the blood types possible
shtirl [24]

Answer:

AB, aB, Ab

Explanation:

Man has blood type B so could be BB (homozygous dominant) or could be Bb (heterozygous)

Woman has blood type A, so she could be AA (heterozygous dominant) or Aa (heterozygous)

Now, we need to make a separate cross for woman with AA, man with BB and we get children of all AB

Then we can make another cross for genotypes Aa and BB, and we get AB and aB

We can continue this for AA,Bb and for Aa,Bb

5 0
3 years ago
A permeable rock weathers easily because it ________________________.
sleet_krkn [62]
I think the correct answer from the choices listed above is option b. A permeable rock weathers easily because it <span>contains many small, connected airspaces. Its porosity is very high that it can easily be destroyed by simple means. Hope this answers the question.</span>
7 0
3 years ago
Why do deciduous trees lose their leaves?
lisabon 2012 [21]
The answer is c. Deciduous trees lose their leaves to prevent nutrient and water loss.

Losing leaves is a trees' strategy to survive cold winters. It is known that trees primarily lose water through leaves. In the winter, there is no enough water to replace that lost water. If the trees were not to throw away their leaves, they will soon dry out. Also, before falling the leaves begin, reabsorb all nutrients from the leaves and store it for the cold winter. Thus, losing leaves is important to prevent both nutrient and water loss during the winter.
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3 years ago
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