Evidence of Evolution

What does analyzing RNA/DNA strands help determine in evolutionary studies?

• Geological age

• Behavioral patterns

• Similarities and differences between species

• Climate changes

Which species has the same sequence of amino acids in hemoglobin as humans?

• Horse

• Gorilla

• Chimpanzee

• Zebra

Which of the following is NOT a characteristic of vestigial structures?

• They serve no purpose today

• They are completely phased out

• They are remnants from ancestors

• They do not harm the organism

Which of the following is NOT a homologous structure?

• Human arm and bat wing

• Whale flipper and cat leg

• Bird wing and insect wing

• Human leg and cat leg

What is the main idea presented in the diagram about homologous structures?

• All species have identical limbs

• Different species have similar limb structures due to common ancestry

• Limbs of different species have no similarities

• Only mammals have homologous structures

What is the study of how organisms develop from a fertilized egg into a fully developed living organism called?

• Embryology

• Ecology

• Genetics

• Physiology

If the early stages of embryo development are very similar, what does it suggest about the organisms?

• They are unrelated

• They share a common ancestor

• They are different species

• They have different habitats

Which of the following pairs are analogous structures?

• Bird wing and insect wing.

• Human hand and monkey hand.

• Whale flipper and fish fin.

• Cat paw and dog paw.

Which of the following is an example of a vestigial structure in humans?

• Appendix

• Heart

• Liver

• Kidney

What does the presence of homologous structures in different species suggest?

• They evolved independently

• They have identical functions

• They live in similar environments

• They share a common ancestor