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BartSMP [9]
3 years ago
10

A cell contains 1 pair of chromosomes. One chromosome contains the R. E, and L alleles. The other chromosome contains the r, e,

and 1 alleles. At the end of cell division, the genotypes of the resulting gametes are 50% REL and 50% rel.
a. Which type of cell division occurred? Mitosis Meiosis
b. Is there evidence of crossing over in prophase I? Yes No Not applicable
c. How did you make the above conclusions? or
Biology
1 answer:
GalinKa [24]3 years ago
3 0
Biología es una buenas materia pero esto ya no le entiendo y está en otro idioma
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A, B and C are the events that will cause an ecological disturbance.

Rationale:

A. Introduction of a new species: When a new specie is introduced, it increases the competition in ecosystem with the native species for food, water, space and shelter. This affects the reproductive success of the native species and thus the dynamics of ecosystem.

B. Climate change: Climate change is different from a simple change of weather. The best example would be of Antarctica where the ice is melting fast due to the global warming. The native species find it harder to adapt to the warm temperatures.

C. Late spring snowstorm: Spring is the season where the plants grow and animals shed their fur. When snowstorms occur in this season they harm these plants and animals that live there.


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3 years ago
Imagine an exercising muscle cell that requires a constant supply of oxygen to avoid fatigue. At which of the following distance
KiRa [710]

Answer:

b. 100nm

Explanation:

The correct answer to the given question is 100nm. Low level of oxygen is observed when active fibers are at a distance of 50m or more than 50m from the perfused capillary, this is why the correct answer to the given question is 100nm, which is the option b. in the given question.

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siniylev [52]

Answer:

Duodenum (option 3)

Explanation:

Digestion of carbohydrates, proteins, and fats continues in the small intestine. Starch and glycogen are broken down into maltose by small intestine enzymes. Proteases are enzymes secreted by the pancreas that continue the breakdown of protein into small peptide fragments and amino acids.

The duodenum is the first section of the small intestine and is the shortest part of the small intestine. It is where most chemical digestion using enzymes takes place

8 0
2 years ago
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stepan [7]

Answer:

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Explanation:

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