with Correct Answers
What is the correct order that a medical application is tested before being used in the
general population?
a) Basic research then stage 111 clinical trial
b) Basic research then stage 1 clinical trial
c) Stage 111 through to stage 1 clinical trial
d) Basic research then stage 1 through to stage 111 clinical trial
e) Basic research then stage 1 through to stage IV clinical trials - ANSWER-D
Explain how research findings are communicated? - ANSWER-Through peer reviewed
journals, classified according to their impact factor. Peer review describes the process
of experts providing advice and either accepting or rejecting the manuscript for
publishing.
What is the correct order of the classification levels?
a) Kingdom, domain, phylum, order, family, genus, species
b) Domain, kingdom, phylum, class, order, family, genus, species
c) Kingdom, domain, class, order phylum, family, genus, species
d) Genus, species, phylum, class, order, family, domain, kingdom
e) Class, domain, family, genus, kingdom, order, phylum, species - ANSWER-B
Explain the difference between traditional and molecular biology based methods for
classifying organisms - ANSWER-Traditional classification is based on physical traits
such as cell type, cell wall, body organization and mode of nutrition. Biology based
methods of classification is through DNA and the comparison of Dan sequence
organisms genome.
In Binomial nomenclature, the scientific name of an organism is based on:
a) its kingdom and domain groups
b) Its type of cell and method of reproduction
c) A randomly assigned name given by the person who discovered it
d) Its genus and species name
e) Its numerical position within its phylogeny tree - ANSWER-D
Alternative forms of a gene are called
a) Homogenous
b) genotype
c) Locus
d) Autosomes
e) Alleles - ANSWER-E
, F1 offspring that show a phenotype that is an intermediate between the two parental
phenotypes for that trait are demonstrating:
a) Linkage
b) Independent assortment
c) Incomplete dominance
d) Sex chromosome inheritance
e) chromosomal segregation - ANSWER-C
Explain the difference between genotype and phenotype. Use a punnet square for a
dihybrid cross between two heterozygous parents (AaBbx Aa Bb) to illustrate the
probability for the resulting genotype and phenotype outcomes (Assume pure
dominance for the trait). - ANSWER-?
Clues of the existence of a dominant trait when studying a pedigree, include al of the
following EXCEPT:
a) All affected have affected parents
b) The trait appears more often in males then females
c) The trait shows a vertical pattern of inheritance
d) Approximately half of each generation is affected - ANSWER-B
Blood types can be used to demonstrate all of the following EXCEPT:
a) Dominance
b) Recessiveness
c) Co dominance
d) Incomplete dominance
e) Multiple alleles - ANSWER-D
Explain the basis of human blood groups and the implications on blood donation and
pregnancy - ANSWER-?
Explain the mechanism of sex linked traits and how you might identify that on a
pedigree - ANSWER-?`
Which of the following is NOT a characteristic of a prokaryotic gene?
A0 Contains regulatory promotor and termination regions
b) Related genes grouped in operas
c) Expression regulation by gene product
d) Polycistronic mRNA
e) mRNA processing to remove introns - ANSWER-E
Describe the types of regulation for eukaryotic gene expession - ANSWER-?
Eykaryotic chromosomes have special fandom repeating ends called
a) Sister chromatids
b) kinetochore
c) Centromere