Complete the following narrative by circling the word or phase in each bold face

Question

Complete the following narrative by circling the word or phase in each bold faced parenthesis that most accurately completes the statement. The study of variation in bacteria has several features that are distinct from the study of genetics in eukaryotic organisms. Bacteria typically have (a single, two, multiple) chromosome(s) that is composed of (single stranded RNA, single stranded DNA, double stranded DNA). There are (one, two) copies of the (linear, circular) molecule, there may be additional small pieces of circular DNA carrying accessory genes called (introns, plasmids, codons). I he outward appearance of the organism, or (genotype, phenotype), is determined by which version of the particular gene that is present. The different versions of the gene are called (heterozygotes, plasmids, alleles). The normal looking individual is called the (wild type, mutant, marker). Visible phenotypes studied in bacteria include colony pigmentation and texture, but (selectable, differential, magic) markers involving fermentation of particular sugars are often studied. Mutations in genes that confer the ability to grow, or not grow, under a given set of conditions are called (selectable, differential) genotypic markers Bacteria can often synthesize their own growth factors like amino acids, and are called (chemotrophs, auxotrophs, prototrophs). Mutants unable to synthesize their own growth factors are called (autotrophs, auxotrophs, prototrophs). Since bacteria reproduce asexually all the members of a colony are genetically identical and referred to (plasmids, clones, homozygotes). There are limited means of gene exchange in bacteria. These include the transfer of free DNA called (transduction, translation, transformation), transfer during mating called (conjugation, transduction, competence), and gene transfer mediated by virus called (transduction, theta structure, conjugation).

Explanation / Answer

1. A single

2.Double standard DNA

3.One

4. Circular

5.Plasmids

6.Phenotype

7.alleles

8. wild type

9. selectable

10 selectable

11. chemotrophs

12. auxotrophs

13. clones

14. transformation

15. conjugation

16.transduction.

The correct answers are given above in the respective sequence numbered. The paragraph is self explanatory for the correct phrase given,

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