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for an individual having a genotype formed of two different alleles that condition different varieties of the same phenotypical trait upon what will
define disadvantages of using the plate counts method1 it takes time usually 24 hours or more is required to obtain visible colonies2 microbial count
define advantages of using the plate counts method1 it is simple and sensitive method2 it provides viable count as only live cells will grow and
considering a pair of homologous chromosomes containing a gene having two different alleles how many different genotypes can the individual presentif
define plate counts and colony forming unitplate counts is the most frequently used method to measure microbial numbers the technique however can be
what are few examples of phenotypical characteristics that present two or more varieties and of phenotypical features that do not vary in relation to
what are the situations in which the environment can alter the genotype of an individual what is the condition for this type of change to be
are environmental phenotypical changes transmitted to the offspringchanges caused on the phenotypes by the environment are not transmitted to the
does the environment exert an influence on the phenotypethe phenotype may be altered compared to the original situation conditioned by its genotype
what is genotype what is the difference between phenotype and genotypethe genotype is the genes dna nucleotide sequences contained in the chromosomes
what is the phenotypephenotype is every observable characteristic of a living being conditioned by its genes a few phenotypes may be altered by
are the alleles of a gene essentially originated one from the father and the other from the mother are there exceptionsit is natural so that alleles
define disadvantages of direct microscopic count1 small cells are difficult to see under the microscope and may be missed2 it gives total count ie
define advantages of direct microscopic count1 it is easy inexpensive and relatively quick method2 it gives information regarding size and morphology
explain direct microscopic count - measurement of microbesthe most obvious way to determine microbial number is through direct counting under a
what is quantitative techniquesmicrobial quality of substances like food milk air water soil etc can be assessed both qualitatively and
explain the quantitative techniquesnow that we are well-versed with the techniques involved in preparing and maintaining cultures it is also
what are the alleles of a genethe diploid individuals have paired chromosomes for instance in humans there are 23 pairs of chromosomes totaling 46
what is signifying by gene locusthe gene locus locus means place is the location of a gene in a chromosome that is the position of the gene in a dna
how is the concept of chromosome related to the concept of the genea chromosome is a dna molecule and chromosome may contain several different genes
is gene a triplet of consecutive dna nucleotidesa gene isnt a triplet of dna nucleotides with their respective nitrogen-containing bases like cgt or
explain precautions for isolation of pure culture1 plating of the medium should be done 24 hours before performing the streakingthere should not be
explain procedure for isolation of pure culturenow carry out the exercise following the steps enumerated herewith1 label the name of the organism on
define laser tweezers technologyin addition to above said classical methods advance technologies can be used for obtaining pure cultures laser
define most probable number mpn methodthe mpn method is like agar shake tube method where no agar is used the dilutions of the microbial suspension