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katrin [286]
3 years ago
15

In galapagos finches, Darwin noted that beak size and shape seemed to reflect

Biology
1 answer:
Hatshy [7]3 years ago
3 0

...that seemed to reflect the size of seeds the birds ate.

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In a nuclear reactor, when the control rods are lowered between the fuel rods, they ______ the reaction
Jet001 [13]

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i believe its slow

Explanation:

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3 years ago
A cell with 80 chromosomes undergoes mitosis. How many chromosomes are found in the daughter cells? How many daughter cells are
Natalka [10]

Answer:

1. 80 chromosomes are found in each of the daughter cells. 2. Two daughter cells are produced. 3. The daughter cells are identical to each other.

Explanation:

Mitosis is simply a process of cell division whereby two daughter cells that are genetically identical are produced from a single parent cell. A cell having 80 chromosomes would undergo Mitosis through these various stages:

Interphase: This can be referred to as the rest phase between cell division when mature enough for reproduction. This is a preparatory stage where DNA is duplicated and ready for the division of chromosomes

Prophase: This stage marks the beginning mitosis of the cell with 80 chromosomes. The chromatin threads start a coiling process in which the chromosomes become condensed to enable easy distribution to daughter cells without tangling.  

Prometaphase: This phase commences toward the end of the prophase, where the nuclear envelop breaks down. The chromosomes move toward to the center of the cell.

Metaphase: At this stage, the duplicated chromosomes line up on the mid plane or equator of the cell. During this stage, each chromatid is condensed completely and appears thick and distinct.

Anaphase: At this stage, the chromosomes move toward the poles as each replicated copies of the DNA of the cell ends up on either side of the cell. What we would have here at this stage is an entirely two new sister chromatid having 80 chromosomes. Cytokinesis begins towards the end of this stage as the parent cell cytoplasm divides which also continues at telophase.

Telophase: This is the final phase of Mitosis where two separate nuclei are formed and Cytokinesis takes place to complete the division of the cell to form two daughter cells having the same number of chromosomes. These cells are genetically identical to the original parent cell.

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3 years ago
An area in a forest was cleared to build a road. Which two of the following will be likely effects on the ecosystem
Montano1993 [528]
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What is an advantage of using fossil fuels to generate electricity? Using wind power is less expensive than burning coal. Fossil
7nadin3 [17]

I’d say B is the best choice

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3 years ago
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How mitochondra help a cell get the materials it needs?
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The mitochondria is the power house of the cell it stores energy for the whole cell. :) hope this helps

Explanation:

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