Unit 6: Mendelian Genetics

Front

What is a dominant allele?

Back

A dominant allele is an allele that is always expressed in the phenotype when present, typically represented by a capital letter.

Front

What is a recessive allele?

Back

A recessive allele is an allele that is only expressed in the phenotype when two copies are present, typically represented by a lowercase letter.

Front

How can you identify dominant and recessive traits?

Back

Dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

How many alleles does an offspring receive from each parent?

Back

An offspring receives one allele from each parent for a specific trait.

Front

What factors can influence gene expression?

Back

Gene expression can be influenced by both genetic variation and environmental factors.

Front

What is the phenotype?

Back

The phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the genotype?

Back

The genotype is the genetic constitution of an organism, representing the alleles it carries.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., HH or hh).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Hh).