Genetic Terms - Practice

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the combination of alleles (e.g., Rr, BB, bb).

Front

What is a phenotype?

Back

A phenotype is the physical appearance or observable traits of an organism, determined by its genotype.

Front

What does it mean if an allele is dominant?

Back

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

Front

What does it mean if an allele is recessive?

Back

A recessive allele is one that only expresses its trait when two copies are present in the genotype (e.g., bb).

Front

What is the phenotype of a plant with genotype Rr?

Back

The phenotype is Red, as R (red) is dominant over r (white).

Front

What is the phenotype for the genotype bb?

Back

The phenotype is Pink, as b (pink) is recessive.

Front

What is the phenotype for the genotype Bb?

Back

The phenotype is Brown, as B (brown) is dominant.

Front

What does the letter 'R' represent in genetics?

Back

'R' represents a dominant allele for a trait, such as red color in moon flowers.

Front

What does the letter 'r' represent in genetics?

Back

'r' represents a recessive allele for a trait, such as white color in moon flowers.

Front

How do you determine the phenotype from a genotype?

Back

You determine the phenotype by identifying the dominant allele present in the genotype.