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gayaneshka [121]
3 years ago
5

What must happen to a chromosome before a cell starts mitosis? What must happen to a chromosome before a cell starts mitosis? A.

The two chromatids of the chromosome must become attached to each other. B. Both molecules of DNA in the chromosome must be replicated. C. The chromatin of the chromosome must be completely condensed. D.The single DNA molecule in the chromosome must be replicated.
Biology
1 answer:
Snowcat [4.5K]3 years ago
4 0

Answer:

The DNA must be replicated first to be a whole chromosome since at the previous division it was only a set of two "half" chromosomes.

Explanation:

Mitosis never replicates DNA which is split in half in a set pattern every replication to prevent mutations.

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The word that would fit the blank is vascular. You are consuming the vascular tissues of a plant when consuming a celery stick. This part of the celery is called the petiole. This is the stalk that joins a leaf and a stem. This part is made up largely of vascular tissues.
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Trace minerals are needed in much smaller amounts than major minerals, but they are just as essential for good health. They are
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Explanation:

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3 years ago
FIRST ANSWER BRAINLIEST!! BIOLiOGY!! IF RIGHT!!
natima [27]

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8 0
3 years ago
If free ear lobes ( L ) are dominant over attached ear lobes ( l ) what is the phenotype of an individual with a genotype of l l
Margarita [4]

Answer:

An individual with an ll genotype (recessive) for the ear lobe shape trait will have a phenotype of attached ear lobes (option a).

Explanation:

The phenotypic expression of a recessive trait only occurs when both members of the allelic pair are recessive, while the presence of at least one dominant allele inhibits the expression of the recessive trait.

In this case, for the "ear lobe shape" trait, an individual with a genotype ll has a phenotype of attached ear lobes, which is recessive. In contrast, LL and Ll genotypes would express a free ear lobes phenotype.

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4 0
2 years ago
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