Natural Selection Quiz

• They both have the same number of guppies with large spots

• The population in Brazil has more guppies with large spots.

• The population in Venezuela has more guppies with large spots.

• These bar graphs do not show which population has more guppies with large spots

• Only population 2 will survive because it is the only population with variation.

• All the populations will survive because the hummingbirds will change the length of their beaks if they need to.

•  Populations 1 and 2 will survive.

•  Populations 2 and 3 will survive.

•  The water became warm. As a result, ducks with thin feathers were more likely to survive, so the ducks with thick feathers changed to have thin feathers.

• The water became warm. As a result, ducks with thin feathers were more likely to survive, so both kinds of ducks passed on the gene for thin feathers to their offspring.

• The water became warm. With each generation, more ducks with thin feathers survived long enough to pass on the gene for thin feathers to their offspring

• You cannot tell how the environment changed. With each generation, more ducks passed on the gene for thin feathers to their offspring.

• The population in Niger has the largest number of tall giraffes.

• The population in Somalia has the largest number of tall giraffes.

• Both populations have the same number of tall giraffes.

• These bar graphs do not show which population has more tall giraffes

•  Populations 1 and 2 will most likely survive.

• Populations 2 and 3 will most likely survive.

• Only Population 2 will survive because it is the only population with variation.

• All the populations will survive because the seals will change the thickness of their blubber if they need to.

• You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.

• The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.

• The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.

•  The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring

• The cactuses in 1970 had smaller spines than the cactuses in 2015.

• The cactuses in 1970 had larger spines than the cactuses in 2015.

• There were more cactuses in 1970 than there were in 2015.

• There was more variation in spine size in 1970 than there was in 2015.

• You cannot tell how the environment changed. With each generation, more squirrels passed on the gene for black fur to their offspring.

•  There were more black trees. Squirrels with black fur are more likely to survive, so the squirrels with gray fur changed to have black fur.

• There were more black trees. Squirrels with black fur are more likely to survive, so both types of squirrels passed on the gene for black fur to their offspring.

• There were more black trees. With each generation, more squirrels with black fur survived long enough to pass on the gene for black fur to their offspring

•  All the populations will survive because the lizards will change the length of their legs if they need to.

• Populations 1 and 2 will most likely survive.

•  Populations 2 and 3 will most likely survive.

• Only Population 2 will survive because it is the only population with variation

• No blue jays could have been born with a thin-beak trait because none of the adult blue jays had that trait to pass down.

• No blue jays could have been born with a thin-beak trait in the past, but some with that trait could be born in the future if the environment changes to have pine cones with seeds

• A blue jay could have been born with a mutation in its genes for the thin-beak trait and lived for a little while, but it would have been more likely to die before it had offspring

• A blue jay could have been born with a mutation in its genes for the thin-beak trait, but having a mutation in its genes would have caused it to die when it was born