Snapdragons are popular garden plants that produce brightly colored flowers. when a plant that is homozygous for white flowers is crossed with a plant that is homozygous for red flowers, all offspring are pink. snapdragons are an example of a plant that exhibits an inheritance pattern called incomplete dominance.

r=red w=white

1. what are the phenotypes of the f1 generation snapdragons?



2. what are the genotypes of the f1 parent plants?

genotype of f1 parent plant 1:

genotype of f1 parent plant 2:



3. next, think about the gametes each parent plant will produce. list the allele in each gamete.

f1 parent plant 1:

gamete 1:

gamete 2:

gamete 3:

The phenotype of the offspring is 100% pink.

Genotype of plant 1: WW. Genotype of plant 2: RR.

Gamete 1: W. Gamete 2: R.

Explanation:

Homozygous is a genetic condition where an individual inherits the same alleles from both parents. So if a plant is homozygous for white flowers, its genotype is WW. While, if another plant is homozygous for red flowers, its genotype is RR.

When a white flower plant is crossed with a red flower plant, all offspring are pink because it exhibits a pattern called incomplete dominance.

Incomplete dominance is the genetic interaction in which homozygotes are phenotypically different from heterozygotes. Crossings that have incomplete dominance are those in which there is no dominant or recessive trait.

A gamete is a sex cell which can only have one allele of each gene. They are produced by the organisms and these are the cells used during reproduction. WW plant can only produce W gametes. while RR plant can only prouce R gametes.

1. A cross between a W gamete and a R gamete, will produce an offspring of 100% WR genotype. The phenotype of this flowers is 100% pink, because it has one red and one white allele, and the inheritance pattern is incomplete dominance. There is no dominant allele, but the phenotype is a mixture of the expression of both.

2. Genotype of F1 parent plant 1: WW

   Genotype of F1 parent plant 2: RR

3. F1 parent plant 1:  

   Gamete 1: W

   Gamete 2: R

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