Which two of the following have operated to increase divergence between mosquito fish populations on island?

a. improved gene flow

b. bottleneck effect

c. sexual selection

d. founder effect

e. natural selection

TLS Online TPP Program

#Question id: 19689

#Unit 13. Methods in Biology

Which of the following statements are true about the PR interval?

a. It includes the P wave and the PR segment

b. The beginning of electrical excitation of the atria and the beginning of excitation of the ventricles.

c. Conduction time through the AV node.

d. P wave + PR segment + QRS Complex

TLS Online TPP Program

#Question id: 19690

#Unit 13. Methods in Biology

In electrocardiogram, PR interval represents-

TLS Online TPP Program

#Question id: 19691

#Unit 13. Methods in Biology

The QT interval of an electrocardiogram (ECG) includes the  

TLS Online TPP Program

#Question id: 19692

#Unit 13. Methods in Biology

What does ST interval show on ECG?

TLS Online TPP Program

#Question id: 19693

#Unit 13. Methods in Biology

The U wave is an inconstant finding that:

TLS Online TPP Program

#Question id: 19694

#Unit 13. Methods in Biology

How to calculate heart rate from ECG?

a. by counting the number of QRS complexes

b. by counting the number of R Waves

c. by counting the number of P Waves

d. by counting the number of T Waves