Review evolution and genetic engineer

During a school field trip to a natural history museum, Grace and Mia learned about fossils. Which type of evidence do fossils provide for evolution?

• structural

• functional

• physiological

• tenuous

David noticed that a chameleon can change its color to blend in with its surroundings. This structural adaptation is called _____________.

• symbiosis

• camouflage

• mutualism

• mimicry

In _____________________ selection, a breeder like Henry selects individuals with desirable variations and mates them.

• natural

• artificial

• population

• competitive

During a biology class, Kai asked, 'What is the selective agent in natural selection?'

• humans

• breeders

• mutations

• environment

During a biology class, Henry asked, 'What is the name given for genetic changes in living things over time?'

• evolution

• adaptation

• homeostasis

• negative feedback

During a biology class, Abigail and Arjun learned that the DNA sequences of whales and ungulates, or hooved animals, are very similar. What type of evidence of evolution is this?

• fossil

• vestigial

• molecular (genetic)

• embryological

Biologist Kai collected one group of fruit flies from desert and another from a forested region in the mountains. They tested the flies to see how well they survived at different temperatures. The two graphs show the percentage of flies surviving as temperature was gradually increased from 36 ℃ to 46 ℃.

• The surviving fruit flies reproduce and pass on their heat tolerance trait to their offspring.

• The fruit flies begin to migrate to new regions where temperatures become very hot in summer.

• Fruit flies that are members of a population living in temperature region differ in the range of temperatures that they can tolerate.

• Fruit flies with high heat tolerance have higher chance to survive the high temperature while fruit flies with moderate or low heat tolerance die.

During a biology class, Emma asked, 'Fossil evidence shows that structures considered vestigial in living organisms __________.'

• have always been vestigial

• were useful to their ancestors

• do not fill gaps in the fossil record

• are not found in ancient organisms

In a biology class, Kai and Nora are studying DNA sequences. Which of these is most likely indicated when two species have similar DNA sequences?

• The species are not closely related.

• The species will have similar fitness.

• The species share a common ancestor.

• The species have no evolutionary relationship

During a biology class, Avery and Kai were discussing what evidence for a past evolutionary relationship can be seen in different groups of vertebrates. What did they conclude?

• totally different protein sequences

• no homologous structures in their anatomy

• similar features in early stages of embryos

• different features in early stages of embryos