TLS Online TPP Program

#Question id: 4715


Claytonia virginica is a woodland spring herb with flowers that vary from white, to pale pink, to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytonia with pink flowers have greater relative fruit set than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?

#Unit 11. Evolution and Behavior
  1. The percentage of pink flowers should increase over time.

  2. The percentage of white flowers should increase over time.

  3. The distribution of flower colors should not change.

  4. The distribution of flower colors should randomly fluctuate over time.

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TLS Online TPP Program

#Question id: 15121

#Unit 8. Inheritance Biology

Which of the following examples would NOT be consistent with a gene dosage effect?

TLS Online TPP Program

#Question id: 15116

#Unit 8. Inheritance Biology

In a rare blood type referred to as the Bombay phenotype, individuals are unable to attach the A or B antigens to their red blood cells. Individuals that are homozygous recessive for gene "H" have the Bombay phenotype and their blood type is type "O" regardless of their ABO genotype. This is an example of what extension of Mendelian inheritance?

TLS Online TPP Program

#Question id: 15115

#Unit 8. Inheritance Biology

A semi lethal allele is an example of which of the following extensions of Mendelian genetics?

TLS Online TPP Program

#Question id: 12176

#Unit 8. Inheritance Biology

In a Z-linked characteristic, Cameo plumage, which produces brown feathers, while the wild-type plumage is a glossy metallic blue. If  a pure blue-colored male is crossed with a cameo female, then what will be the probability of blue and cameo plumage of male and female in F2 phenotype?

TLS Online TPP Program

#Question id: 12175

#Unit 8. Inheritance Biology

Colour blind are X-linked disorder, a colour blind male have daughter cross with colour blind male, then what will be the probability of colour blindness?

TLS Online TPP Program

#Question id: 12174

#Unit 8. Inheritance Biology

Red-eyed female (X ^+X^+ ) crossed with white-eyed male (X^w Y) , all the F1 progeny shows the red phenotype, then what will be the probability of F2 phenotype;
 i)  Male with red eye phenotype
ii) Female with white eye phenotype
iii) Female with red eye phenotype
iv) Male with white eye phenotype