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Alla [95]
2 years ago
6

Which type of receptor binds to ligands that cannot enter the cell?

Biology
1 answer:
BabaBlast [244]2 years ago
3 0

Answer:

A membrane

Explanation:

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A child has sickle-cell disease (ss) but neither parent is ill. What must be true of her parents’ genotypes? The father is heter
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Answer:

Both parents are heterozygous carriers.

Explanation:

Both parents are heterozygous carriers. Sickle Cell Anaemia is usually referred to as a recessive condition since an individual must have two copies of the sickle gene in order to have the disorder.

Since neither of the parents is ill, both of them must be heterozygous carriers for the child to have the disorder

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Why is it important for DNA to be organized? Please put it in your own words.
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Chromosomes are made up of  DNA(deoxyribosenucleicacid) which is a protein complex called chromatin that is organized into subunits called nucleosomes. The way in which eukaryotes compact and arrange their chromatin also helps regulate gene expression.

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The number of major histocompatibility (MHC) protein combinations possible in a given population is enormous. However, an indivi
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Answer:

The correct answer is "each of the MHC genes has a large number of alleles, but each individual only inherits two for each gene".

Explanation:

In normal conditions, an individual has only two different alleles for a given gene: one inherited from his mother and the other from his father. However, this does not mean that among humans, there are only two different alleles for each gene. The major histocompatibility (MHC) genes are a clear example of this, since there are multiple combinations for each MHC class. For instance, there are 40 very similar alleles only for the HLA-B27 subtype.

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eustachian tube  i think lol

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