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notsponge [240]
4 years ago
6

A student creates a dichotomous key to identify common household pets. what is wrong with this key?

Biology
1 answer:
Sholpan [36]4 years ago
3 0

Answer: two different traits are being compared.

Explanation:

When making a dichotomous key, you must compare similar traits- for example, blue hair or purple hair? Small ears or big ears? You can’t compare things like “hairy body” name “lives in cage” because those are different traits.

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A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 4 picograms of DNA
damaskus [11]

Answer:

b: 8;8

Explanation:

Mitotic or meiotic cell division constitute the m phase of the cell cycle. At the end of the m phase, the new cells enter the interphase stage of the cell cycle. The interphase is further sub-divided into;

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The G_0 phase is essentially a resting phase. Cells that do not need to divide except when necessary move into this phase after exiting the m phase.

Actively dividing cells enter the G_1 phase after exiting the m phase. Cell development and growth takes place. From there, the cells enter the S phase where DNA replication/synthesis takes place. The cells then enter the G_2 phase where proteins are synthesized in preparation for division or m phase.

At the S phase, the amount of DNA a cell carries is doubled but the chromosome number remains the same. For example, if a cell enters the S phase with 2 g of DNA containing 10 chromosomes, at the end of S phase, the amount of DNA would have come 4 g while the number of chromosomes will remain 10.

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The correct option is b.

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7 0
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Allushta [10]

Answer:

The correct answer is option a. "by trophallaxis with receiver bee".

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3 0
3 years ago
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