Answer:
Group 1 of frogs.
Explanation:
It is the first thing because you have to note which of the frogs you're talking about before you start.
Answer:
B. RNA polymerase reaches the beginning of a gene
1.independent assortment of a pair of alleles in the formation of gametes because genes independently separate from one another
Answer: This is called allopatric speciation. The species continue to evolve in the own way, adapting to their different conditions. The eventually become two different species adapted to each environment.
Answer:
70 ml/beat.
Explanation:
Stroke volume may be defined as the volume of the blood that are pumped by the left ventricle in one contraction. The blood output can also be determined by knowing the stroke volume.
The stroke volume can be calculated by the formula as follows:
Stroke volume = End diastolic volume - End systolic volume
Here, end diastolic volume = 120 and end systolic volume = 50.
Stroke volume = 120 - 50
Stroke volume = 70 ml/ beat.
Thus, the answer is 70 ml/ beat.
