Biologists performed an experiment with flies to examine the effects of population size on the maintenance of genetic variation  and  on  egg-to-adult survival.  From  a  large  source  population, they  randomly  assigned  eggs  to  three experimental  populations  of  size  N,  equal  to  20,  60,  and0100.  For  later  generations,  they  collected  N  eggs  from each  population  and  moved  them  into  identical  vials  that  co0ntained  f2re0sh  me4d0ium.  Th6e0y  coun8te0d  the  number  of adult flies that emerged and used tissue samples from the adults for genetic analyses. Genetic variation was measured by  scoring  alleles  at  several  polymorphic  loci  and  expressed  as  the  average  number  of  alleles  at  those  loci.  The results are summarized in Figure 1 and Figure 2 below.

Based on Figure 1, which of the following best describes the change in genetic variation over time? 

TLS Online TPP Program

#Question id: 24163

#Unit 1. Molecules and their Interaction Relevant to Biology

Today’s postal service is more efficient than ever. Mail that once took months to move by horse and foot now moves around the country in days or hours by truck, train, and plane. If your letter or package is urgent, the U.S. Postal Service offers Priority Mail and Express Mail services. Priority Mail is guaranteed to go anywhere in the United States in two days or less. Express Mail will get your package there overnight.

This paragraph best supports the statement that

TLS Online TPP Program

#Question id: 24162

#Unit 1. Molecules and their Interaction Relevant to Biology

Black-and-white camera film, in the old days of film photography, was very sensitive to blue light but not to red light. Blue skies would often show very little detail, because the film couldn’t record all that it was seeing. To compensate, photographers would put a red filter on the lens, darkening the sky enough that the film could record its fluffy clouds.

This paragraph best supports the statement that

TLS Online TPP Program

#Question id: 24161

#Unit 1. Molecules and their Interaction Relevant to Biology

Mathematics allows us to expand our consciousness. Mathematics tells us about economic trends, patterns of disease, and the growth of populations. Math is good at exposing the truth, but it can also perpetuate misunderstandings and untruths. Figures have the power to mislead people.

This paragraph best supports the statement that

TLS Online TPP Program

#Question id: 23379

#Unit 1. Molecules and their Interaction Relevant to Biology

The aspect ratio of TV screen is:

TLS Online TPP Program

#Question id: 23378

#Unit 1. Molecules and their Interaction Relevant to Biology

Collection of information in advance before designing communication strategy is known as:

TLS Online TPP Program

#Question id: 23377

#Unit 1. Molecules and their Interaction Relevant to Biology

Feed-back of a message comes from: