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Alexxx [7]
3 years ago
5

Many plant cells have more than two complete sets of chromosomes in each cell. Explain how this might occur.

Biology
1 answer:
otez555 [7]3 years ago
7 0
Polyploidy (more than two complete sets of chromosomes) is not rare among plants. For example, pollen grains may reach female flowers via animals or wind. In some cases, pollen grains from species with 4 complete sets of chromosomes will have 2 sets of chromosomes. Pollen grains may fuse with a female reproductive organ with 1 set of chromosome (so, female plant must have 2 sets of chromosomes). The resulting zygote will have 2 + 1 sets of chromosomes, so the plant will have 3 complete sets of chromosomes.
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What did you learn about the channel on Mars from the new NASA data? After you look at the new evidence card about Mars, describ
pentagon [3]

Explanation:

The new research carried out by NASA on mars suggets that many of the Mars' ancient channel have been carved by flowing water, were actually formed by melt water beneath glacial ice sheets. The rocks looked familiar to the rocks found on Earth in these water channels. Moreover,  conglomerate rock was found near the base of the channel on Mars.

6 0
3 years ago
Match each example of a conflict with what it tells you about the character invloed
OLEGan [10]

An example of a conflict is that Beverly is going to make Millicent's challenge extra tough: she seems to enjoy treating people badly.

<h3>What is a conflict?</h3>

A conflict simply refers to any form of disagreement, misunderstanding, or struggle that arises between two (2) or more parties, especially due to any of the following reasons;

  • Differing opinions
  • Incompatibility
  • A difficult challenge.
  • Opposing view
  • Superiority

Some examples of a conflict with what it tells about the character include the following:

  • Beverly is going to make Millicent's challenge extra tough: she seems to enjoy treating people badly.
  • Tracy is rejected by the sorority because of the way she appears: she doesn't look and act like the people who are popular.
  • Millicent is unwilling to abandon her old friend Tracy: she thinks being a good friend is more important than being popular.
  • Millicent is starting to question being in a group: she takes time to think things though carefully.

Read more on conflict here: brainly.com/question/24769299

#SPJ1

6 0
2 years ago
What type of human activities cause the elevation of atmospheric greenhouse gases
Leto [7]
The amount of greenhouse effect on Earth is directly proportional to the concentration of greenhouse gases in the atmosphere. In this era of industrialization, although it may seem that it has greatly improved the global economy, it also downplays the importance of consistently upholding our role as a steward to Earth. 

The most common types of human activities that continuously worsen the greenhouse effect are: burning of fossil fuels, agriculture, and industrial processes.

The burning of fossil fuels such as coal, oil, and gas emits carbon dioxide which accounts for approximately three-quarters of the warming impact caused by the greenhouse gas emissions. This is amplified significantly through deforestation. 

Methane, which accounts for 14 percent, and nitrous oxide, which accounts for eight percent are one of the major greenhouse gas emissions on earth. This can be sourced out from livestock and rice fields and also fossil fuel extraction and organic waste decay in landfill sites.

Industrial processes would incept fluorinated gases which accounts for one percent of the warming effect of current human greenhouse gas emissions.

Although it may seem that the values are not that high, but it must also be taken into consideration the several or a superfluous number of industries all around the world that simultaneously worsens the already groveling site of the continuously deteriorating and exploited planet Earth.
6 0
3 years ago
WILL GIVE BRAINLIEST TO WHOEVER HELPS ME What are the characteristics of prokaryotes?
jekas [21]

Answer:

A. A prokaryote lacks a well-defined nucleus.

C. A prokaryote lacks cell organelles.

Explanation:

A prokaryote has DNA or RNA just floating in the cytoplasm. There is no nucleus to hold them inside. A prokaryote also lacks a mitochondria and other organelles, so it is different from a eukaryote.

4 0
4 years ago
Inherited disease can be caused by damage to DNA caused by _________.
never [62]

Answer:

A. DNA Polymerase

Explanation:

It absolutely cannot be C. Ozone or D. Radiation since those two answers are in relation to outside variables affecting health. Not inherited diseases. Therefore, it is in between A. or B.

7 0
2 years ago
Read 2 more answers
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