Molecular Biology Test Bank Chapter 1

1- Which of the following scientists provided definitive evidence for the chromosomal theory?





... Answer is B)
2- Who conducted the X-ray diffraction studies of DNA?





... Answer is A)
3- The chromosomal theory of inheritance holds that





... Answer is D)
4- Evidence that physical recombination occurs between two chromosomes was provided by





... Answer is A)
5- During an experiment with drosophila, it was discovered that all females had red eyes. A conclusion based on this observation would be:





... Answer is E)
6- Which of the following is true about wild-type organisms?





... Answer is C)
7- Some genes located on the same chromosome do not show perfect linkage because





... Answer is C)
8- Which of the following statements is not true regarding genetic mapping?





... Answer is E)
9- Which of the following was demonstrated by Frederick Griffith?





... Answer is B)
10- The relationship between genes and enzymes was shown by





... Answer is B)
11- Which of the following is not a product of transcription?





... Answer is B)
12- Which of the following would not be considered a mutation?





... Answer is E)
13- A conclusion from Mendel's experiments was that inheritance was due to the blending of traits.


... Answer is B)
14- Mendel concluded from his work with the garden pea that inheritance is particulate.


... Answer is A)
15- The term phenotype refers to the whole set of observable characteristics of an organism.


... Answer is A)
16- Offsprings of original parents are the second filial generation.


... Answer is B)
17- Heterozygotes have two copies of the same allele.


... Answer is B)
18- A dominant phenotype is one that is always observed.


... Answer is A)
19- The alternate form of a gene is called an allele.


... Answer is A)
20- Two genes that are very close together on a chromosome are more likely to undergo recombination.


... Answer is B)
21- Semiconservative replication occurs because one original DNA strand acts as a template for the synthesis of a new strand.


... Answer is A)
22- The experimental system used to look at the relationship between genes and enzymes was

23- Amino acids are specified by triplet bases called

24- During translation,the genetic code in mRNA is "read" by

25- The process of making RNA from DNA is called

26- Crossing over between two homologous chromosomes occurs during

27- _______ induced mutations by x-ray.

28- Organisms are grouped into three domains called ________, _________, and _____________.
1-
2-
3-
29- The process of making a gene product is called.

1-21 : MCQ questions
22-29 : Fill Blank questions



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