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TLS Online TPP Program

#Question id: 9193

Which of the following best describes the consequences of White-band disease in Caribbean coral reefs?

#Unit 9. Diversity of Life Forms
  1. Staghorn coral has been decimated by the pathogen, and Elkhorn coral has taken its place.
  2. Key habitat for lobsters, snappers, and other reef fishes has improved.
  3. Algal species take the place of the dead coral, and the fish community is dominated by herbivores.
  4. Algal species take over and the overall reef diversity increases due to increases in primary productivity.
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TLS Online TPP Program

#Question id: 26589

#Unit 3. Fundamental Processes

Which proteins regulates number of repeats in RNA component for telomere lengths
TLS Online TPP Program

#Question id: 26787

#Unit 8. Inheritance Biology

In the S phase of meiotic interphase, each chromosome replicates, producing two copies of each allele, one on each chromatid, the homologous chromosomes segregation takes place in__

Which of the following statements is correct about the segregation of chromosomes?

a.If no crossing over has taken place, the two chromatids of each chromosome segregate in anaphase II and are identical

b. If crossing over has taken place, the two chromatids are no longer identical, and the different alleles segregate in anaphase II

c. If no crossing over has taken place, the two chromatids of each chromosome segregate in anaphase I and are identical
TLS Online TPP Program

#Question id: 26788

#Unit 8. Inheritance Biology

Which of the following factors did not contribute to Mendel’s success in his study of heredity?

a.His use of the monoecious pea plant

b.His study of plant chromosome

c.His adoption of an experimental approach

d.His use of mathematics

e.The Plant use is easy to cultivate
TLS Online TPP Program

#Question id: 26789

#Unit 8. Inheritance Biology

Given below are types of crossing in column II and their associated features/effects/functions in column I

 Select the correct set of combinations from the options given below: 
TLS Online TPP Program

#Question id: 26790

#Unit 8. Inheritance Biology

 Assuming that the A, B, C and D genes are not linked, the probability of a progeny being AaBBccDd from a cross between AABbccDd and aaBBccDD parents will be 
TLS Online TPP Program

#Question id: 26791

#Unit 8. Inheritance Biology

There are four genes which control the phenotype and assort independently such as A, B, C and D. If the genotype Aa Bb Cc Dd is selfed then what is the probability for progeny which shows the dominant phenotype for AT LEAST ONE of  phenotypes controlled by

genes A, B,  C and D?