Life Science Unit Review

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses, such as AA, Aa, or aa.

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that can mask the effect of a recessive allele in determining a trait.

Front

What is a pedigree chart?

Back

A pedigree chart is a diagram that shows the genetic relationships and inheritance patterns among family members over generations.

Front

What is the difference between phenotype and genotype?

Back

Phenotype refers to the observable traits of an organism, while genotype refers to the underlying genetic makeup.

Front

What is the significance of sulfur dioxide in environmental science?

Back

Sulfur dioxide is a pollutant that can harm ecosystems, and its levels can affect the growth of organisms like lichen.

Front

How do you determine the genotype of an individual from a pedigree?

Back

You can determine the genotype by analyzing the traits of the individual and their relatives shown in the pedigree.

Front

What is the role of lichen in an ecosystem?

Back

Lichen is a symbiotic organism that can indicate air quality and is sensitive to pollution levels.

Front

What does it mean if an allele is recessive?

Back

A recessive allele is one that is masked by a dominant allele and only expresses its trait when two copies are present.

Front

What is the purpose of a genetics chart?

Back

A genetics chart helps visualize the inheritance patterns of traits across generations.

Front

What is the relationship between genotype and phenotype?

Back

The genotype influences the phenotype, as the genetic makeup determines the traits expressed.