Evolution of the spindle was of central importance to eukaryotic cells. what role is played by the spindle during mitosis?
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Answer 1
Answer:
The role played by the spindle during mitosis is to bring about an orderly distribution of chromosomes to the daughter cell. The spindle fibers form a protein structure that divides the genetic material in a cell. They are necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: in both mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
Answer 2
Answer:
Thespindle fibers are important in theseparation of sister chromatids of the chromosomes, at the centromere. This occurs during metaphase toanaphase. The spindle is composed ofmicrotubules. They extend from the poles of the cell and attach to thekinetochore (at the centromere) of the chromosomes and start pulling apart
Why omnivores may not Always stay un the Same trophic level?
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no because organisms such as humans are omnivores they can eat both meat and plants and may act as 1st,2nd or 3rd level heterotroph.
Plz hlp Has to do with lilies: How many chromosomes would a pollen grain have compared to an ovule?
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Your sentence is hard to understand but, if I am understanding correctly it has half the number of chromosomes
What is the importance of the large surface area of the cerebral cortex?
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the brains processing between cells are on the cortex, and the large surface area is filled with many folds that have cell processing and hold cerebral spinal fluid to lubricate the brain.
A(n) ____________ is recognized by lymphocytes to be foreign and causes an immune response.
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An antigen is recognized by lymphocytes to be foreign and causes an immune response. It is important to know about the immune system of the body as well. The immune system is the system that recognizes and defends itself against any viruses, bacteria or any other harmful foreign bodies.
Answer: I’m not to sure but possibly T-cell
Explanation:
Which brain structure relays information from the eyes to the visual cortex? A) Amygdala B) Medulla C) Hippocampus D) Thalamus
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Answer is D) Thalamus
Explain why animals have specialized excretory organs but plants do not. ...?
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They consume food and they have much higher metabolism. That means that more waste products are produced. Plants can use much of the waste produced and it is in fact raw material. Animals don't normally produce their own chemicals from scratch like plants normally do so they can't just recycle the waste. They need to remove it. About the only waste plants need to get rid of is excess oxygen produced during the day. That is actually three reasons but recycling is related to plants not consuming but making their own chemicals from scratch. In a way it pretty much comes down to one main reason.
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