Unit 6 lesson 3: How can DNA analysis help us to understand how organisms are related?

What is the degree of genetic or evolutionary similarity between two or more organisms?

• Relatedness

• Phylogenetic tree

• Traits

• Natural Selection

Define 'Amino Acid'.

• Deoxyribonucleic acid, the molecule that carries genetic information in all living organisms.

• The building blocks of proteins, consisting of a carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable side chain

• The degree of genetic or evolutionary similarity between two or more organisms.

• A method used in molecular biology to estimate the time of divergence between two species based on the rate of genetic change.

What is DNA?

• The estimated point in evolutionary history when two species diverged from a common ancestor.

• Organisms that share a more recent common ancestor and therefore have a higher degree of genetic similarity.

• Deoxyribonucleic acid, the molecule that carries genetic information in all living organisms.

• A method used in molecular biology to estimate the time of divergence between two species based on the rate of genetic change.

Which definition explains the concept of 'Rate of Change' in genetics or evolution.

• The degree of genetic or evolutionary similarity between two or more organisms.

• The speed at which genetic or evolutionary changes occur within a population or species.

• The estimated point in evolutionary history when two species diverged from a common ancestor.

• A method used in molecular biology to estimate the time of divergence between two species based on the rate of genetic change.

What is meant by 'Molecular Clock' in molecular biology?

• A method used in molecular biology to estimate the time of divergence between two species based on the rate of genetic change.

• Deoxyribonucleic acid, the molecule that carries genetic information in all living organisms.

• The estimated point in evolutionary history when two species diverged from a common ancestor.

• The building blocks of proteins, consisting of a carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable side chain.

When estimating the time of divergence between two species based on the rate of genetic change, what is the term used?

• Molecular clock

• Molecule

• Molecular biology

• Atomic particles

What is 'Divergence Time' in evolutionary history?

• The degree of genetic or evolutionary similarity between two or more organisms.

• Organisms that share a more recent common ancestor and therefore have a higher degree of genetic similarity.

• The estimated point in evolutionary history when two species diverged from a common ancestor.

• The speed at which genetic or evolutionary changes occur within a population or species.