Helmholtz constructed an apparatus specially to measure short time intervals of the order of ten-thousandths of a second, Helmholtz was able, in an elegant experiment published in 1850, to measure precisely the speed of conduction of the nerve signals in the motor nerve of the frog's leg.

8 0

2 years ago

Genetic drift is a change in the gene pool due to chance. Genetic drift increases as the population decreases. What accounts for

hammer [34]

Answer:

Explanation:

Genetic drift is a change in the gene pool by chance of a Population as a result of sampling error that occur over generation.

Genetic drift is a random process that can lead to changes in large Population over short period of time. This random drift is caused by recurring small population sizes, reduction in small population called bottleneck. Genetic drift fixes alleles or phenotype in a population there by increasing inbreeding coefficient and homozygosity as a result of of removing alleles. This result in decrease in population.

6 0

2 years ago

Fats,waxes, oils and steroids are all examples of which macromolecule

Doss [256]

Answer:

Fats, waxes, oils and steroids are all examples of macromolecule " lipids "

5 0

2 years ago

This lab activity is designed to explore the effect of two substances on the heart rate of a Daphnia magna specimen. One of the

erastova [34]

Answer is given below

Explanation:

Heart rate was studied in this experiment and is the dependent variable studied or measured. This is a dependent variable.
An independent variable is a variable whose modulation is not affected by any other variable in the experiment. Here is the alcohol independent variable.
Other substances such as intelligence are also independent variables.

5 0

2 years ago