« previous next »

Author Question: Which of the following is a true statement concerning genetic variation? A) It i (Read 999 times)

Garrulous

  • Hero Member
  • *****
  • Posts: 686
on: Jul 9, 2013
Which of the following is a true statement concerning genetic variation?
A) It is created by the direct action of natural selection.
B) It arises in response to changes in the environment.
C) It must be present in a population before natural selection can act upon the population.
D) It tends to be reduced by the processes involved when diploid organisms produce gametes.
E) A population that has a higher average heterozygosity has less genetic variation than one with a lower average heterozygosity.


Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #1 on: Jul 10, 2013
Hello

C is the answer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Allelic variation in the CCR5 gene Allelic variation in the CCR5 gene
Examples of Conditions Detected by Prenatal Genetic Screening Methods Examples of Conditions Detected by Prenatal Genetic Screening Methods
Continuous Variation in Height (Females) Continuous Variation in Height (Females)
Use of synthetic mRNAs to determine genetic code possibilities Use of synthetic mRNAs to determine genetic code possibilities
Genetic therapy for mice with sickle cell disease Genetic therapy for mice with sickle cell disease
Example of a genetic pedigree of the autosomal dominant disease Marfan syndrome Example of a genetic pedigree of the autosomal dominant disease Marfan syndrome
Video: Effect of blood chemistry - stimuli, hyperventilation response and hypoventilation response

For a complete list of videos, visit our video library