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TLS Online TPP Program

#Question id: 14829

A new drug is developed that inhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?

#Unit 2. Cellular Organization
  1. Potentially-it would definitely only impair bacteria, but wouldn't matter for the ones that don't use a flagellum to move around.
  2. Potentially-if it could be shown that it also didn't impair the production of the eukaryotic flagellum.
  3. No-our eukaryotic cells depend on flagella to move around in our body, and this would impair that function.
  4. No-bacterial flagella are produced using microtubules, not the protein flagellin. This drug would be useless in eliminating bacteria.
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TLS Online TPP Program

#Question id: 4856

#Unit 8. Inheritance Biology

Map units on a linkage map cannot be relied upon to calculate physical distances on a chromosome for which of the following reasons?
TLS Online TPP Program

#Question id: 4857

#Unit 8. Inheritance Biology

Sturtevant provided genetic evidence for the existence of four pairs of chromosomes in Drosophila in which of these ways?
TLS Online TPP Program

#Question id: 4858

#Unit 8. Inheritance Biology

Which of the following statements is true?
TLS Online TPP Program

#Question id: 4859

#Unit 8. Inheritance Biology

How would one explain a testcross involving F1 dihybrid flies in which more parental-type offspring than recombinant-type offspring are produced?
TLS Online TPP Program

#Question id: 4860

#Unit 8. Inheritance Biology

 A plant of genotype GGHH is crossed with another plant of the genotype gghh. If the F1 is test crossed, what percentage (%) of the test cross progeny will have the genotype gghh when the two genes are - (P) unlinked, (Q) completely linked with no crossing over, (R) 10 m.u. (genetic map unit) apart, (S) 24 m.u. apart?
TLS Online TPP Program

#Question id: 4861

#Unit 8. Inheritance Biology

Two character X and Y, both follow law of dominance due to 3:1 F2 phenotypic ratio monohybrid cross separately. If carry out dihybrid selfing cross for heterozygous genotype for both character does not follow law of independence assortment in normal environmental condition due to  these two loci for character are linked at 20 map unit as cis configuration. Which of the following proportional genotype that homozygous for all loci in F2 generation?