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TLS Online TPP Program

#Question id: 3605

Male Plant blue flower with long pollen was crossed with female plant white flower with long pollen. Analysis of progeny of this cross showed that 50% of the progeny was red with long pollen while the remaining 50% of the progeny was white with long pollen. Which one of the following statements is a possible explanation of the above results?

#Unit 8. Inheritance Biology

  1. Both male and female plant is heterozygous for flower color while male plant is heterozygous for pollen length

  2. Both male and female plant is heterozygous for pollen length while male plant is heterozygous for flower color

  3. Male plant heterozygous for both pollen length and flower color while female plant is homozygous for pollen length

  4. Male plant heterozygous for both pollen length and flower color while female plant is heterozygous for pollen length

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TLS Online TPP Program

#Question id: 27954

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the statement is given regarding the Pyruvate kinase 
a. Pyruvate kinase is activated  by ATP, acetyl-CoA, long-chain fatty acids 
b. Pyruvate kinase is allosterically inhibited by ATP, acetyl-CoA, long-chain fatty acids
c. Accumulation of alanine allosterically inhibits pyruvate kinase M in muscles, slowing the production of pyruvate by glycolysis
d. Accumulation of alanine activate pyruvate kinase M in muscles, increases the production of pyruvate by glycolysis

Which of the following is incorrect
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: 15146

#Unit 8. Inheritance Biology

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;
What do these results tell you about each of the mutants?
TLS Online TPP Program

#Question id: 26567

#Unit 3. Fundamental Processes

E(var) mutations lie in genes whose products are needed to activate gene expression. They include members of 
TLS Online TPP Program

#Question id: 12142

#Unit 10. Ecological Principles

Regarding the geographic range of a species, which of the following statements is true?