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ipn [44]
3 years ago
12

True or false: homologous chromosomes separate during mitosis?

Biology
1 answer:
Tcecarenko [31]3 years ago
4 0

Answer:

Homologous chromosomes do not function the same in mitosis as they do in meiosis. Prior to every single mitotic division a cell undergoes, the chromosomes in the parent cell replicate themselves. The homologous chromosomes within the cell will ordinarily not pair up and undergo genetic recombination with each other.

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which of the following best describes the interaction between the nervous system and the immune system?
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The immune system and the nervous system maintain extensive communication, including 'hardwiring' of sympathetic and parasympathetic nerves to lymphoid organs. Neurotransmitters such as acetylcholine, norepinephrine, vasoactive intestinal peptide, substance P and histamine modulate immune activity.
7 0
2 years ago
In which mitotic phase are the sister chromatids separated and pulled to opposite poles? see section 12.2 ( page 258) . in which
Brrunno [24]
During anaphase, sister chromatids are pulled to opposite poles by the spindle fibers in preparation for cleavage. 
8 0
3 years ago
Explain why the father determines the gender of a child
vaieri [72.5K]
Both men and women have sex chromosomes. Men usually have one X and one Y chromosome, while women have two X's.

When an egg or sperm is made, it only gets one of the sex chromosomes from the parent. This means that women can only make eggs with an X chromosome. But men can make either X or Y sperm.

During fertilization, the sperm cells race toward the mother-to-be's egg cell. If a sperm with a Y beats all others, then the fetus will be XY. The pregnancy will result in a boy.

However, if a sperm with an X wins the race to the egg, then the fetus will be XX. The parents will have a baby girl.

Nearly everyone's chances are around 50% for having a boy and 50% for having a girl. And yet, we all know families that are all boys or all girls.
6 0
3 years ago
Read 2 more answers
The nucleus has a system of _____ embedded within its outer membrane which allows communication between the nucleus interior and
Bumek [7]

Answer:

pores

Explanation:

The nucleus consists of "nuclear pores" on its outer membrane. Each of these are surrounded by <em>nuclear pore complex.</em> It allows the pore to <u>regulate the movement of molecules between the nucleus and the cytoplasm.</u> It allows small particles to pass through such as ribosomal proteins. It prevents most large particles<em> (except for histone)</em> from passing through; thus, <u>it is selective in nature</u>. This function of the pores clearly shows that <em>it allows communication to occur between the nucleus interior and the cytoplasm.</em>

5 0
3 years ago
Vitamins A, D, E, and K are dependent upon carbohydratesproteinsfats for their absorption by cells.
daser333 [38]
False, the description is incorrect.

The only right answer is oil or lipid or fats. These lipid macromolecules are the only substance needed in order for these vitamins A, D E and K to be absorbed by the cell and be used in many cellular activities. 
5 0
3 years ago
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