Dihybrid and NonMendelian Genetics

Front

What is co-dominance in genetics?

Back

Co-dominance is a type of inheritance pattern where both alleles in a heterozygous individual contribute to the phenotype, resulting in offspring that express both traits simultaneously.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blend of the two.

Front

What is the phenotypic ratio of a cross between a red flower (RR) and a white flower (WW) in incomplete dominance?

Back

100% of the offspring will have pink flowers (RW).

Front

In snapdragons, which genotype leads to a blended phenotype?

Back

The heterozygous genotype (RW) leads to a blended phenotype.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a speckled flower (RB)?

Back

The phenotypic ratio is 2 red flowers to 2 speckled flowers.

Front

What does the term 'genotype' refer to?

Back

Genotype refers to the genetic constitution of an individual, specifically the alleles present for a particular gene.

Front

What is a Punnett square used for?

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

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous genotypes have two identical alleles for a trait, while heterozygous genotypes have two different alleles.

Front

What is the expected genotype ratio from a monohybrid cross?

Back

The expected genotype ratio from a monohybrid cross is 1:2:1.

Front

What is the significance of the dominant allele in genetics?

Back

The dominant allele is the one that is expressed in the phenotype when present, masking the effect of the recessive allele.