Genetics Review

Front

What is a homozygous dominant genotype?

Back

A homozygous dominant genotype consists of two identical dominant alleles, represented as 'BB'.

Front

What is the definition of inheritance in genetics?

Back

Inheritance is the process by which genetic traits are passed from parents to their offspring.

Front

What is the probability of a child being blue-eyed if both parents are brown-eyed with genotype Bb?

Back

The probability is 25%.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype consists of one dominant and one recessive allele, represented as 'Bb'.

Front

What does it mean for an allele to be recessive?

Back

A recessive allele is one that is masked by a dominant allele and only expressed in a homozygous recessive genotype, represented as 'bb'.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits or characteristics.

Front

What is the significance of the Punnett square in genetics?

Back

The Punnett square is a tool used to predict the genetic outcomes of a cross between two organisms.

Front

What does the term 'allele' mean?

Back

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

Front

What is the role of dominant alleles in inheritance?

Back

Dominant alleles mask the effects of recessive alleles in heterozygous genotypes.

Front

How can environmental factors influence genetic traits?

Back

Environmental factors can affect the expression of genetic traits, leading to variations in phenotype.