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vampirchik [111]
3 years ago
12

What is an ecosystem

Biology
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

A place where plants and animals interact with each other and the physical environment.

If too many plant eaters were alive there wouldn't be any more plants so other animals eat the plant eaters, but if there is too many animals to eat the animals that eat the plants there would be too many plants so there is another animal to balance it out.

Hope this helps.

Explanation:

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Which of the following happens during interphase?
pickupchik [31]

Answer:

Interphase is the portion of the cell cycle that is not accompanied by gross changes under the microscope, and includes the G1, S and G2 phases. During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... In interphase, the cell gets itself ready for mitosis or meiosis.

Explanation:

3 0
2 years ago
The cross of an aa male and Aa female produced an offspring with the genotype AAa. Therefore, the resulting offspring has 3 copi
creativ13 [48]

Answer:

The correct answer is option d.

Explanation:

Based on the given question, the genotype of the male parent is aa, the genotype of the female parent is Aa, and the genotype of the offspring is AAa, showing trisomy characteristics. In the given case, the existence of two A chromosomes shows that the chromosomes non-disjunction at the time of gametogenesis have taken place in the female as she is the only one possessing A allele. Hence, it can be concluded that the disjunction is maternal in characteristic.  

The duplication of chromosomes takes place at the time of the S-phase of meiosis. Thus, after going through S-phase, the karyotype of the cell will be AAaa (maternal gametogenesis), this set of the chromosome is termed as homologous pair, and the pair of AA or aa is termed as sister chromatids.  

The meiotic disjunction takes place in two phases. First, in meiosis I disjunction, in this separation of homologous chromosomes takes place, that is, the maternal cell AAaa get differentiated into aa and AA daughter cells. Secondly, in meiosis II disjunction, the separation of sister chromatids takes place into two independent chromosomes, that is, the formation of two cells each comprising chromosome A from the AA cell and the formation of two cells each with chromosome a from the aa cell.  

Thus, the phenomenon of non-disjunction would have taken place at the time of meiosis II in the case of a female gamete to exhibit two A chromosomes. Hence, the correct answer is option d.  

4 0
3 years ago
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Explain how the following two facts may be related: Most sea organisms cannot see colors other than blue. Almost all marine biol
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Answer:

Since marine life can only see blue, n creature would have evolved anything but blue colors because that would not have helped their survival

Explanation:

6 0
3 years ago
Reproductive cells in humans are also called
ValentinkaMS [17]

Answer:

They could be called Gametes as they are inside the reproductive cells.

6 0
2 years ago
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