Question

1. Which of the following traits would lead to an overall healthier and more genetically diverse species?
   1. Decrease in natality/birthrates          d. Increase in immigration
   2. Increase in mortality                           e. Male sterility
   3. All of the above (A, B, D, E)                 f. None of the above (A, B, D, E)

2. Which answer choice correctly identifies & explains the rationale for the blood type which is commonly referred to as the universal donor?
   1. O+: the most common type               c. AB+: no plasma antibodies
   2. O-: no surface antigens                      d. AB-: can receive any blood type

3. During the process of transcription, what is another name for the promotor region, found on the DNA coding strand, which will be made into mRNA?
   1. TATA box                                             c. Black box
   2. Xbox                                                    d. AUG box

4. True or False: Only one ribosome can read and efficiently translation new amino acids from an mRNA strand at a time?
   1. True                                                    b. False

Answer 1

1. Increase in immigration

Immigration is the coming in of individuals from one place to another place. Individuals come from a new place carrying new alleles and mate with individuals already present in that place. This leads to an increase in genetic diversity of the place. This increase in genetic diversity allow beneficial alleles to increase in number and therefore the population becomes healthier.

2. O-

O is a universal donor because it has no antigens on its surface and therefore no antibodies are formed against antigens in this blood.

For Rh allele, - is universal donor because it has no antigens and therefore, no antibodies are synthesized.

3. A

Promoter is called TATA box because its sequence is 5' TATAAT 3'.

4. False

​​​​​​More than one ribosomes can also participate in translation to form New amino acids at one time. It occurs in prokaryotes which have Association of ribosomes to form polyribosomes or polysomes.

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