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TLS Online TPP Program

#Question id: 12349

Males in a population differ in the time they spend displaying to females. A researcher hypothesizes that predators are responsible for these differences. Males display for longer durations when there are no predators in the vicinity and for shorter durations when there is a predator nearby. Which of the following study designs is the most appropriate test of this hypothesis?

#Unit 10. Ecological Principles
  1. Map predator distribution in the area; measure the abundance of females; quantify the natural variation in male display rates in areas without predators
  2. Measure display  rates of  males at  the beginning  of  the breeding season; remove all  predators from the study site; then measure male display rates later in the breeding season; repeat for multiple populations
  3. Measure display rates of males in areas with and without predators; randomly assign males to two treatments: (i) capture and release back in original area (ii) capture and switch between areas; measure display rates for all experimental males
  4. Measure display rates of males in areas with and without predators; randomly assign males to two treatments: (i) addition of females to the area (ii) removal of females from the area; measure display rates for all experimental males
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TLS Online TPP Program

#Question id: 14996

#Unit 8. Inheritance Biology

Which of the following most accurately restates Mendel's law of segregation?
TLS Online TPP Program

#Question id: 14997

#Unit 8. Inheritance Biology

You capture several interesting insects from a population in your yard. By inbreeding, you develop true breeding strains that differ only in the shape of their wings - one strain has round wings while the other strain has oval wings. How might you demonstrate that Mendel's principles apply to your insects?
TLS Online TPP Program

#Question id: 14998

#Unit 8. Inheritance Biology

You set up a monohybrid cross between true breeding round winged and true breeding oval winged insects. Your F1 offspring have round wings, and you collect the following numbers of F2: Round wings: 302; Oval wings: 86. Which of the following statements is NOT correct?
TLS Online TPP Program

#Question id: 14999

#Unit 8. Inheritance Biology

I know that black coat color in mice is dominant to albino. Black mice get a higher price at the pet store so I am disappointed when I cross a black mouse with an albino mouse and get 6 albino and 2 black mice in the litter. I expected all black. What mistake did I make?
TLS Online TPP Program

#Question id: 15000

#Unit 8. Inheritance Biology

I do a chi square analysis of the offspring from my cross of a black mouse and albino mouse. If the black mouse was heterozygous I should have expected a 1:1 ratio, and I got 6 albino and 2 black mice. What is my chi square value?
TLS Online TPP Program

#Question id: 15001

#Unit 8. Inheritance Biology

You cross true breeding lizards that are either green or albino and discover that all the offspring are striped green and white. Which is the most likely result if you cross two striped lizards?