Live Class Final Exam Review

Front

What is the reason that humans, birds, whales, and lizards have similar arm bones?

Back

They have a common ancestor.

Front

What is speciation?

Back

When two species can no longer successfully interbreed/mate and produce offspring.

Front

What are the possible genotypes for a cross that results in TT = 25%, Tt = 50%, tt = 25%?

Back

TT = 25%, Tt = 50%, tt = 25%.

Front

Why do living things need nitrogen?

Back

To make proteins and amino acids.

Front

What is the passive transport mechanism that moves water from high concentration to low concentration?

Back

Osmosis.

Front

What is the definition of evolution?

Back

The change in the heritable characteristics of biological populations over successive generations.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a genotype?

Back

The genetic constitution of an individual, often represented by alleles.

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is the role of DNA in living organisms?

Back

DNA carries genetic information essential for the growth, development, functioning, and reproduction of all living things.