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Nat2105 [25]
2 years ago
10

When we see chiasmata under a microscope, that lets us know which of the following has occurred?

Biology
1 answer:
ioda2 years ago
4 0
When we see chiasmata under a microscope, that lets us know that prophase I has occurred. During this phase of meiosis, the nuclear envelope breaks up and disappears, and so does nucleolus. The chromosomes become visible at this point.
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What can you infer about a species that has a random pattern of distribution over space? A uniform pattern?
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Food supply and resources are directly proportional to a particular distribution pattern. Random distribution occurs when several pollen grains of some flowers were carried by wind or bees. These flowers will then bloom where they were scattered.

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7 0
2 years ago
Genetic mutations in asexually reproducing organisms lead to more evolutionary change than do genetic mutations in sexually repr
s2008m [1.1K]

Answer:

The correct answer is b) asexually reproducing organisms, but not sexually reproducing organisms, pass all mutations to their offspring.

Explanation:

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In sexual reproduction, the offspring get half genes from male parents and half from female parent so a parent does not pass all the mutation in the offspring and in sexual reproduction selection pressure eliminate those offspring that have bad mutation so that the wrong mutation can not pass to next generation.

Therefore the correct answer is b.

3 0
2 years ago
The oil immersion objective is necessary to determine the morphology of prokaryotes
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6 0
2 years ago
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xxTIMURxx [149]

Answer:

Explanation:The cells that make up the xylem are adapted to their function: They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.

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1 year ago
After mixing a heat-killed, phosphorescent strain of bacteria with a living non-phosphorescent strain, you discover that some of
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Answer:

Descendants of the living cells are also phosphorescent.

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2 years ago
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