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uranmaximum [27]
2 years ago
6

Crossing over occurs when

Biology
2 answers:
Zanzabum2 years ago
5 0

The correct answer to this question is B:  homologous chromosomes join together to form tetrads during prophase I.

balandron [24]2 years ago
3 0
During meiosis 1, prophase 1 Each chromosome  form tetrads and  and become more and more condensed. This is when crossing over occurs. So your answer is B. 
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mafiozo [28]

Answer:

From least to most energetically favorable, the reactions are:

Glucose to Glucose-6-P (least) ; Glucose-6-P to Fructose-6-P; ATP to ADP and Pi; PEP to pyruvate (most favorable)

Explanation:

ΔG represents the free energy change that occurs during a chemical reaction. A reaction with negative free energy change is exergonic and spontaneous. Negative free energy change represents the fact that reactants have more free energy than products. The excess of the energy is released during the reaction and makes it a spontaneous process.

q`On the other hand, a reaction with positive free energy change is endothermic and non-spontaneous. These thermodynamically unfavorable reactions are coupled with other exergonic reactions to make them occur.

Among the given example, PEP to pyruvate has the highest negative free energy change (−14.8 kcal/mol) and therefore, is energetically most favorable. On the other hand, "Glucose to Glucose-6-P" has the highest positive free energy charge (+3.3 kcal/mol) making it energetically the most unfavorable reaction.  

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3 years ago
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kakasveta [241]

Answer : Oxygen


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3 years ago
Gizmos- Nitrogen Cycle- Highschool
tia_tia [17]

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4 0
2 years ago
A person is standing with a drawn bow and arrow. He is aiming it at a bull's-eye. What type of energy is being described?
olga nikolaevna [1]

The energy being described her is <u>potential energy.</u>

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The condition in which an individual has three copies of a chromosome is known as
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