Biology SOL Review

Front

What is the best tool for examining chromosomes from animal cells?

Back

Compound microscope.

Front

What is an example of homeostasis in a multi-cellular organism?

Back

Regulating body temperature.

Front

What is the process by which individuals with inherited traits well suited for their environment leave more offspring than others?

Back

Natural selection.

Front

In humans, what is the dominant allele for unattached earlobes?

Back

E (unattached earlobes).

Front

In humans, what is the recessive allele for attached earlobes?

Back

e (attached earlobes).

Front

What is the probability that a heterozygous woman and a man with attached earlobes will have a child with unattached earlobes?

Back

50%.

Front

How many chromosomes does a normal human being have?

Back

46.

Front

What is homeostasis?

Back

The ability of an organism to maintain a stable internal environment.

Front

Define natural selection.

Back

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

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present; recessive alleles require two copies to express their trait.