Forms of Inheritance 1

Front

What is co-dominance in genetics?

Back

Co-dominance is a form of inheritance where both alleles in a heterozygote are fully expressed, resulting in a phenotype that is a combination of both traits, such as a roan cow with red and white fur.

Front

What is the expected phenotype ratio of offspring from a roan cow and a roan steer?

Back

1 Red : 2 Roan : 1 White.

Front

What does it mean for a flower to be heterozygous?

Back

A heterozygous flower has two different alleles for a trait, such as one allele for red color and one for white color, resulting in a pink flower.

Front

What is the probability of offspring having hemophilia from a cross of X^H X^h and X^H Y?

Back

The probability is 1/4.

Front

What is incomplete dominance in genetics?

Back

Incomplete dominance is a form of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes, such as grey offspring from a black and a white rabbit.

Front

What is the phenotype of a plant with genotype RR when crossed with a plant with genotype WW under incomplete dominance?

Back

The phenotype of all offspring will be pink (RW) flowers.

Front

Define phenotype in genetics.

Back

Phenotype refers to the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

Define genotype in genetics.

Back

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

Front

What is the significance of the F1 generation in genetics?

Back

The F1 generation is the first filial generation of offspring resulting from a cross between two parental (P) organisms.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even in the presence of a recessive allele, while recessive alleles only express their trait when two copies are present.