SB 3 abc Mega Review

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, represented by the alleles inherited from the parents.

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous genotypes have two identical alleles (e.g., BB or bb), while heterozygous genotypes have two different alleles (e.g., Bb).

Front

What is co-dominance in genetics?

Back

Co-dominance is a form of inheritance where both alleles in a heterozygous individual are fully expressed, resulting in a phenotype that shows both traits (e.g., a calico cat).

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where one allele does not completely dominate another, resulting in a blended phenotype (e.g., red and white flowers producing pink flowers).

Front

What is the expected genotype of offspring from two O blood type parents?

Back

100% OO.

Front

What allele combination produces green seeds in pea plants if yellow is dominant?

Back

The genotype must be yy to produce green seeds.

Front

Define dominant allele.

Back

A dominant allele is an allele that expresses its phenotype even in the presence of a recessive allele.

Front

Define recessive allele.

Back

A recessive allele is an allele that only expresses its phenotype when two copies are present (homozygous).

Front

What is the phenotypic ratio in a monohybrid cross?

Back

The phenotypic ratio in a monohybrid cross is typically 3:1 for dominant to recessive traits.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross.