Exploring Natural Selection Through Frog Examples

What is the primary factor determining a frog's fitness in its habitat?

• How long it lives

• The number of offspring it produces

• Its ability to catch prey

• The color of its skin

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What is the ultimate measure of an organism's fitness according to the video?

• Its strength

• Its lifespan

• The number of offspring it has

• Its ability to avoid predators

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Why do darker frogs have a higher survival rate in the described habitat?

• They are stronger than lighter frogs

• Predators find them harder to spot

• They are faster

• They live longer

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What could be a long-term outcome of natural selection in the frog population?

• All frogs become lighter

• The habitat changes color

• Darker frogs become more common

• Predators leave the habitat

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What is a key mechanism of evolution discussed in the video?

• Natural selection

• Hibernation

• Metamorphosis

• Photosynthesis

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How does natural selection affect the allele for lighter color in frogs?

• It turns into a darker color allele

• It may still be carried recessively

• It becomes dominant

• It disappears completely

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Why might the allele for lighter color not completely disappear from the frog population?

• The habitat might change color

• Predators prefer darker frogs

• Lighter frogs are better at hiding

• Because of crossing over and mutations

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Can frogs intentionally change their color to adapt to their environment?

• No, changes are random

• Only during mating season

• Yes, but only the younger frogs

• Yes, whenever they want

What role do mutations play in the process of natural selection?

• They ensure survival of the species

• They decrease the frog's fitness

• They can be random and have varied effects

• They are always beneficial

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What happens to traits that negatively affect a frog's fitness?

• They become more common

• They are passed down to all offspring

• They do not get passed down

• They change to positive traits over time

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