Mid-Year Final Practice

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a specific gene, such as BB or bb.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a specific gene, such as Bb.

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that expresses its trait even when only one copy is present (e.g., B in Bb).

Front

What does it mean for an allele to be recessive?

Back

A recessive allele only expresses its trait when two copies are present (e.g., bb).

Front

What is the purpose of mitochondria in a cell?

Back

Mitochondria generate ATP, which is the main energy source for cellular processes.

Front

Why is camouflage important for animals?

Back

Camouflage helps animals avoid predators and increases their chances of survival.

Front

What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

How does fur color affect an animal's survival?

Back

Fur color can provide camouflage, helping animals avoid predators or hunt more effectively.

Front

What is the significance of longer necks in giraffes?

Back

Longer necks allow giraffes to reach food in taller trees, providing a survival advantage.

Front

What was the impact of the Industrial Revolution on moth populations?

Back

Dark-colored moths increased in population because they were better camouflaged against soot-darkened surfaces.