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Karo-lina-s [1.5K]
3 years ago
14

Which structure allows gases and nutrients in and out of the cell

Biology
1 answer:
andriy [413]3 years ago
4 0

Answer:

Cell membrane

Explanation:

Cell membrane is an important part in cell which performs various vital functions. It is not only a simple boundary that surrounds the protoplast rather it is a semi permeable membrane structurally made of proteins and lipid bilayer and regulates the transport of different materials across it.

It regulates the following transports -

  • Disposal of wastes
  • Export and import of nutrients
  • Export and import of various ions
  • Export and import of gases
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So I don’t see answer choices here, but your answer is 50% of the offspring will be homozygous dominant with RR, and 100% of them will carry a homozygous dominant gene of Rr

If you take the two sets and put them into a punnett square, it would look like this (image attached):

When the two sets of alleles are crossed, you would end up with half of your pairs being fully dominant (RR), and the other half being dominant while containing a recessive gene (Rr). Since there’s only one recessive gene in these pairs, it gets overridden and the pair itself is dominant.

So your answer is 50% will be homozygous dominant with RR!

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