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Alexxx [7]
4 years ago
7

What changes you might observe in the fossil record that would indicate the occurrence of a mass extinction?

Biology
1 answer:
Goryan [66]4 years ago
8 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
The changes you might observe in the fossil record that would indicate the occurrence of a mass extinction is the <span>disappearance and subsequent absence of many up till then long-established groups.</span>
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Part D-Relationship of allele behavior to meiosis During which part of meios s (mesoses Ⅰ or meiosis ll) do the two alleles of a
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Answer:

The correct answer will be- Meiosis I, anaphase I

Explanation:

Alleles are the variant alternative forms of a gene which determines the trait of an organism. The trait or phenotype is expressed only when the two alleles controlling a single trait on separate chromosomes are aligned in a complementary position.

During gamete formation, the alleles controlling a trait segregate independently of each other. This segregation of alleles takes place during Anaphase I of meiosis I. During anaphase, the sister chromatids are separated by the mitotic spindles so that the chromosomes can reach the opposite poles.

Thus, Meiosis I, anaphase I am the correct answer.

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Which of the following factors is most likely to decrease the stability of an ecosystem?
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What is the function of the following organelles?
MrRa [10]

Answer:

Explanation:

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The plasma membrane is the same as a cell membrane

Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate

​Vacuole. A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In plant cells, vacuoles help maintain water balance.

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The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.

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