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poizon [28]
3 years ago
5

What are the major differences between meiosis and mitosis in terms of outcome and events?

Biology
1 answer:
In-s [12.5K]3 years ago
7 0
Meiosis is the reproduction of sex cells, mitosis is the replication of cells that have died..ie, skin cells, blood cells...
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Reproductive isolating mechanisms are divided into categories based on when they act. _____ isolating factors prevent fertilizat
Cerrena [4.2K]

Answer: (B) Pre-zygotic; post-zygotic.

Explanation:

Prezygotic isolation occurs before fertilization of eggs. It occurs between the two sex gametes and deter sexual reproduction between different species.

However, individuals are considered to be diverge on the phylogeny tree and different species, when they cannot reproduce.

Mechanisms of prezygotic isolation include habitat isolation, gamete isolation, mechanical isolation, behavioral isolation, and mating seasons.

Whereas, postzygotic isolation prevents the formation of fertile offspring. This phenomenon leads to production of an hybrid offspring from different species and this is a form of speciation in nature.

Mechanisms of postzygotic isolation include hybrid inviability, hybrid breakdown, and hybrid sterility.

6 0
3 years ago
In considering this cross (YyRr and YyRr), the genotype ratio is: YYRR; 2YYRr; 2Yyrr; 4YyRr; YYrr; 2Yyrr; yyRR; yyRr; yyrr. true
HACTEHA [7]
I think that those are the results of the cross

YYRR : YyRr : yyrr
1 : 2 : 1
25% 50% 25%

5 0
2 years ago
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What clastic rock consists of the smallest grain size?
abruzzese [7]
The answer would be sedimentary rock because sedimentary is made up of small grains and also formed by deposition...
4 0
3 years ago
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After giving her dog a bath, a young girl suddenly died. The flea dip she was using on the dog contains a chemical called roteno
TiliK225 [7]
In spite of the fact that this situation is probably not going to occur, rotenone is poisonous in light of the fact that it meddles with the electron transport chain (ETC) in mitochondria, so NADH would develop as recommended.
4 0
3 years ago
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Besides respiration, what other ways is carbon released into the atmosphere?
Veronika [31]
Carbon cycle, one of the most important elements that make up the structure of living things in an ecosystem carbon. Carbon is found in the structure of all organic compounds in living things. 
Earth is important warehouses;
Atmospheric CO2In the waters of CO2 and HCO3-Land, usually coal, is the structure of the oil and limestone.<span>Photosynthesis by plants using airborne CO2 and O2 is converted to organic compounds. By participating in CO2 carbon all live in the structure of the building is used as a raw organic food energy and structure. In respiratory events again returned to the atmosphere as CO2. If a portion of the carbon is deposited on the ground layer mineral or dead plants and animals through the soil into the organic waste. Here are separated by saprophytes live or coal goes back into the atmosphere through the use of fossil fuels such as oil. However, excessive use of fossil fuels in the atmosphere the CO2 greenhouse effect climate change will bring about in the world, raises a few degrees increase and the consequent danger of melting glaciers at the poles of the temperature.</span><span />
7 0
3 years ago
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