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erastovalidia [21]
3 years ago
8

During prophase I of meiosis, crossing over between the sister chromatids occurs. What is the purpose of this process?

Biology
2 answers:
Alex777 [14]3 years ago
6 0
<span>Produce genetic variation</span>
Marat540 [252]3 years ago
4 0
To produce genetic variation.

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Nyatakan emapat faktor yang mempengaruhi kadar transpirasi tumbuhan? ​
pochemuha

Answer:

Light, Temperature, Humidity, Wind, and Soil water

Explanation:

Plants transpire more rapidly in the light than in the dark. This is largely because light stimulates the opening of the stomata (mechanism). Light also speeds up transpiration by warming the leaf.

Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises. At 30°C, a leaf may transpire three times as fast as it does at 20°C.

The rate of diffusion of any substance increases as the difference in concentration of the substances in the two regions increases.When the surrounding air is dry, diffusion of water out of the leaf goes on more rapidly.

When there is no breeze, the air surrounding a leaf becomes increasingly humid thus reducing the rate of transpiration. When a breeze is present, the humid air is carried away and replaced by drier air.

A plant cannot continue to transpire rapidly if its water loss is not made up by replacement from the soil. When absorption of water by the roots fails to keep up with the rate of transpiration, loss of turgor occurs, and the stomata close. This immediately reduces the rate of transpiration (as well as of photosynthesis). If the loss of turgor extends to the rest of the leaf and stem, the plant wilts.

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A greenhouse owner determines that the plants in the greenhouse need a higher humidity level. How could the owner address this p
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Answer:

Providing a controlled source of water vapour through which water can be vaporized into the plant envoirment.

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Humidity ratio is the ratio of the mass of water in air to the mass of dry air. Humidity is needed in some conditions where the air is very dry. In a very dry air setting, there can be excess moisture loss from the plant surface, increasing the Humidity ratio can counter this effects and reduce excess moisture loss.

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What is probability, and how is it used with Punnett squares to predict the outcomes of genetic crosses?
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Answer:

Probability is the chance that a given event will occur. The principle of probability allows us to predict the possible combinations of phenotypes in a genetic cross by using a diagram called Punnett squares. This diagram represents alleles and gives us the genetic variations formed during a cross. For example, a flower has one dominant allele for a blue color, which is represented by capital T, and one recessive allele for a pink color, which is represented by small t. When this flower is crossed with another flowering plant with the same type of alleles, which is Tt, the combinations produced for their offspring includes TT, Tt, tT, and tt.

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