Mastery of Mendelian Genetics and Monohybrid Crosses

Front

What is a monohybrid cross?

Back

A genetic cross between two individuals that differ in one trait, focusing on the inheritance of a single characteristic.

Front

What is the genotype of a homozygous dominant individual?

Back

The genotype is represented as 'AA', where both alleles are the same and dominant.

Front

What is the genotype of a homozygous recessive individual?

Back

The genotype is represented as 'aa', where both alleles are the same and recessive.

Front

What does the term 'phenotype' refer to?

Back

The physical appearance or observable traits of an organism resulting from its genotype.

Front

What does the term 'genotype' refer to?

Back

The genetic makeup of an organism, represented by the alleles it possesses.

Front

In a monohybrid cross, what is the expected genotypic ratio from two heterozygous parents (Tt x Tt)?

Back

1:2:1 (1 homozygous dominant, 2 heterozygous, 1 homozygous recessive).

Front

What is the expected phenotypic ratio from a monohybrid cross between two heterozygous individuals (Tt x Tt)?

Back

3:1 (3 tall plants to 1 short plant).

Front

What is the probability of obtaining a homozygous recessive offspring from a monohybrid cross of two heterozygous parents?

Back

25%.

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is complete dominance in genetics?

Back

A form of inheritance where the dominant allele completely masks the effect of the recessive allele in the phenotype.