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ira [324]
2 years ago
6

Please define cell wall ?

Biology
2 answers:
puteri [66]2 years ago
8 0
A cell wall is a wall that supports the plant cell. It is very firm and that is also the reason why a plant can stand up.
Alex2 years ago
3 0
A cell wall<span> is a structural layer that surrounds some types of </span>cells<span>, situated outside the </span>cell membrane. <span>The rigid outermost </span>cell<span> layer is found in plants and certain algae, bacteria, and fungi but not from animal </span>cells<span>. </span>
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Red/green color blindness in humans is caused by an X-linked recessive allele. If a male who is affected by the condition mates
tiny-mole [99]

<em>50% of the sons have the disorder. </em>

<em />

When this couple has children, one half of their sons will have the disorder. When a male has an X-linked, recessive disorder, his genome will be YXₙ, where Xₙ represents his affected X-chromosome. Since boys can only have one X-chromosome, they cannot be carriers. Having one affected X-chromosome makes them have the condition. His wife, who is not a carrier and does not have the condition will have the genome XX. As you can see in the punnet square, this cross will lead to two sons, one of which has the color-blindness gene. So, 50% of the sons will have the disorder.

5 0
3 years ago
Item 3 If part of the DNA gene being transcribed is TGCAAT , what will the mRNA code be for that part?
Evgen [1.6K]

Answer:

ACGUUA

Explanation:

Transcription is a process that makes mRNA using the DNA template strand. The enzyme RNA polymerase adds ribonucleotides complementary to the sequence of the DNA template strand. RNA lacks the "thymine" and instead has the "uracil". Adenine base in the DNA sequence is transcribed into the “uracil" base in the corresponding RNA. Similarly, "guanine" in the DNA template strand specifies the "cytosine" base in the transcribed RNA.  

Therefore, if a DNA template strand has a sequence "TGCAAT", the corresponding mRNA would have a sequence of "ACGUUA".

4 0
2 years ago
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