What is the phenotype of heterozygous four o’clock flower?

What is the phenotype of a heterozygous 4 o’clock flower?

INCOMPLETE DOMINANCE: In Four O’Clock plants RED FLOWERS (R) are INCOMPLETELY DOMINANT over white (r) flowers. Heterozygous plants show a BLENDED INTERMEDIATE phenotype of PINK flowers.

What is the phenotype of a heterozygote?

Heterozygous individuals have a phenotype somewhere in the middle, what people might call “wavy” hair. In a heterozygous individual, only one curly allele is present, and only half the amount of protein can be made. This causes the hair to be about as half as curly as in a homozygous curly individual.

What is the phenotype produced when a red four o’clock flower is crossed in white four o’clock flower?

A red four o’clock flower (RR) is crossed with a white four o’clock flower (WW) and the resulting F1 offspring are all pink (RW).

What is the genotype of red four o’clock flower?

A red-flowered four-o’clock (any red-flowered four-o’clock) has the genotype RR; a white-flowered four-o’clock has the genotype rr. So, this cross is RR × rr. The F1 offspring will therefore all be Rr, all pink.

What is the phenotype of the RW flowers?

Correct! The genotype for the pink flower is RW, and the genotype for the white flower is WW. This would lead to a 50 percent chance of the offspring having a phenotype of pink.

IT IS INTERESTING:  Is the mitotic spindle composed of two types of microtubules?

What phenotype means?

The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.

What is the phenotype of heterozygous Snapdragon?

In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red (R) and white (R’). The heterozygous genotype is expressed as pink.

What is the genotype of the heterozygous individual?

An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.

What is the phenotype of RR alleles?

RR x rr. You’ll note that 100% of all offspring are Rr, which is the genotype. Since the genotype for all offspring are the same, and the Rr genotype encodes a pink color, then 100% of the phenotypes will be pink (NOT red – remember that this is incomplete dominance).