Mendelian Genetics

Front

What is the genotype of a pea plant that is homozygous dominant for round seeds?

Back

RR

Front

What is the phenotypic ratio of a dihybrid cross of two heterozygous parents?

Back

9:3:3:1

Front

Which of the following alleles is homozygous recessive?

Back

tt

Front

What is the definition of phenotype?

Back

The physical appearance or observable traits of an organism.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is the definition of genotype?

Back

The genetic makeup of an organism, represented by alleles.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even in the presence of a different allele, while recessive alleles only express their trait when homozygous.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What is a Punnett square used for?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents?

Back

3:1