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irga5000 [103]
4 years ago
12

Please help me with these questions

Biology
1 answer:
Irina-Kira [14]4 years ago
4 0
For number 1 the first arrow is the cell wall, the second is the membrane, and the last arrow would be the cytoplasm
For number 2 they are in distilled water Bc they are remaining the same and not shrinking up
For three draw the cells smaller salt water sucks the water out of them
For four they get smaller because the salt has a higher concentration making the water leave the cell. Once water has left the cell begins to shrink
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B: Alveoli.

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Dr. Evil just discovered a way to prevent crossing over from occurring during meiosis in the gametes of her lab rats.
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Dr. Evil has just discovered a way to prevent mating from occurring during meiosis in the gametes of his lab rats. the effects her discovery would have on laboratory mice is that prophase I would be interrupted and there would be reduced genetic variation in the offspring of the mice. because crossover occurs during prophase I of meiosis I and results in genetic recombination, which promotes genetic variation. If this is avoided, genetic variation would be significantly reduced in the offspring.

<h3>What happens in prophase 1?</h3>

Prophase I – in this stage, the condensation of the chromosomes occurs; the temporary disappearance of the carioteca; disappearance of the nucleolus and the duplication of centrioles to the poles of the cell. In prophase, the exchange of genes (crossing-over) also takes place, through the exchange of pieces between homologous chromosomes.

With this information, we can conclude that Prophase I is the first stage of meiosis I. In it, the pairing of homologous chromosomes occurs and a phenomenon known as crossing-over can occur.

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6 0
2 years ago
Which of these show a reproductive strategy?
Vika [28.1K]

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A is the correct answer

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3 years ago
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yaroslaw [1]

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A pure culture consists of only one type of microbe while a  mixed culture has two or more than two microbes.

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In mixed culture the microbe species living together may harm each other existence.

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