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? 

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#Question id: 13002

#Unit 3. Fundamental Processes

Where in a eukaryotic cell do you think you would find each of the following proteins residing when it is actively performing its function. Be as specific as you can in terms of subcellular location.

Match the following with the correct subcellular location;

I) Polymerases	a) In the cytoplasm
II) Ribosomal proteins	b) Inside the plasma membrane.
III) DNA ligase	c) In the mitochondrial matrix
IV) protein that allows ions to pass in and out of the cell	d) In the nucleus of cells
V) Activator protein	e) Inside the nuclear membrane
VI) an enzyme in the Krebs/TCA cycle
VII) a protein that forms a channel through which mRNAs can be exported into the cytoplasm

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#Question id: 19709

#Unit 3. Fundamental Processes

Following are statements related to the telomere related to the stability chromosome

a) protecting the ends of chromosomes from degradation 

b) preventing chromosomal end fusion

c) protect genome from nucleolytic degradation

d) provide a mechanism for their replication by semiconservative length maintenance 

choose the correct statement 

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#Question id: 19710

#Unit 3. Fundamental Processes

Telomeric sequences can be written in the general form 

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#Question id: 19711

#Unit 3. Fundamental Processes

Telomere are marker for the healthy cell, if the cell shows indefinite replication (embryonic or stem cell) the size of telomere lies between the range of  

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#Question id: 19712

#Unit 3. Fundamental Processes

Size of telomeric sequences are marker for the cell division and healthy cell,  Below some of the stages and sizes of telomere are given below

i. 3 – 20 kb (TTAGGG)n	a. cancerous cell
ii. less than 3 kb (TTAGGG)n	b. apoptotic cell death
iii. Ends with no (TTAGGG)n	c. limited replication
iv. Up to 55 kb of (TTAGGG)n	d. indefinite replication

Match them correctly

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#Question id: 19713

#Unit 3. Fundamental Processes

Which of the followings is the incorrect statement regarding telomeric sequences