Which statement is true?(1 point)

Question

Responses

Fossils cannot provide information about life cycles and behaviors.
Fossils cannot provide information about life cycles and behaviors.

Fossils can provide information about the entire evolutionary process of life forms.
Fossils can provide information about the entire evolutionary process of life forms.

Fossils can provide information about when life forms existed.
Fossils can provide information about when life forms existed.

Fossils cannot provide information about relatedness of life forms.

Answer 1

The true statement is: Fossils can provide information about when life forms existed.

Fossils can indeed offer insights into the timing of different life forms, showing when they lived and how they may have evolved over time, although they can also provide some indirect information about life cycles and behaviors. However, they do not provide information about the entire evolutionary process. Additionally, fossils can give clues about the relatedness of life forms through comparative anatomy and phylogenetic analysis, contrary to the last statement.

Answer 2

For decades, scientists relied on the fossil record and comparative anatomy to assemble evolutionary lineages.

Which statement describes a limitation of these methods?

(1 point)
Responses

They can show false relationships between organisms that are not reflected in the DNA.
They can show false relationships between organisms that are not reflected in the DNA.

They are not reliable evidence of how the body structures of organisms evolved.
They are not reliable evidence of how the body structures of organisms evolved.

They cannot be used to determine when species evolved.
They cannot be used to determine when species evolved.

They are no longer relevant because the fossil record is complete.

Answer 3

The statement that describes a limitation of these methods is: They can show false relationships between organisms that are not reflected in the DNA.

This limitation highlights that while the fossil record and comparative anatomy can provide valuable insights into evolutionary relationships, they may not always accurately represent true evolutionary lineages as revealed by genetic data. DNA analysis has become a key tool in confirming or revising these relationships by providing a more precise understanding of the genetic connections among organisms.

Answer 4

Which statement about evolution is accurate?(1 point)
Responses

DNA is the only extant evidence supporting the theory of evolution.
DNA is the only extant evidence supporting the theory of evolution.

Animals, plants, and microbes have their own separate, unrelated ancestries.
Animals, plants, and microbes have their own separate, unrelated ancestries.

Living things have adapted and changed over time for specific, discoverable reasons.
Living things have adapted and changed over time for specific, discoverable reasons.

Scientists no longer study evolution because it has been proven.

Answer 5

The accurate statement about evolution is: Living things have adapted and changed over time for specific, discoverable reasons.

This statement reflects the understanding that evolutionary change is driven by mechanisms such as natural selection, genetic drift, mutations, and environmental changes, which scientists can study and investigate. The other statements are inaccurate; for example, DNA is an important piece of evidence but not the only one, animals, plants, and microbes share common ancestries, and evolution remains an active area of research.

Answer 6

Chimpanzees, chickens, cows, and human beings all share a gene for an insulin hormone. What does this suggest?(1 point)
Responses

This suggests that two of these species share a common ancestor.
This suggests that two of these species share a common ancestor.

This suggests that none of these species share a common ancestor.
This suggests that none of these species share a common ancestor.

This suggests that three of these species share a common ancestor.
This suggests that three of these species share a common ancestor.

This suggests that all of these species share a common ancestor.

Answer 7

The correct response is: This suggests that all of these species share a common ancestor.

The presence of a shared gene for insulin hormone among chimpanzees, chickens, cows, and humans indicates that these species likely have a common evolutionary ancestor from which they diverged. This is a reflection of the concept of common descent in evolutionary biology, where different species can retain certain genetic traits inherited from a shared ancestor.