Question

What is a genotype and phenotype ratio?

Answer 1

In a diploid organism, two alleles for a given gene are expressed and interact to produce physical characteristics. The phenotype of an organism refers to the traits that can be observed. The genotype is an organism's underlying genetic makeup, which includes both physically visible and non-expressed alleles.

Complete answer:
Phenotype:
In genetics, phenotype refers to all observable traits in organisms that are the result of the genotype's interaction with the environment.
The word phenotype comes from the Greek word pheno, which means "to observe." Phenotypes are used to describe the observable characteristics of organisms, such as their height and color.
An organism's phenotype includes its morphology, physical form and structure, development and behavior, biological and physiological properties, and even the organism's products.
As a result, phenotypes are used to distinguish differences in DNA sequences between people who have different heights.
Phenotypic ratio: The phenotypic ratio refers to the proportion of offspring who exhibit a specific trait or set of traits. A test cross can be used to determine the frequency of a trait or trait combinations that will be expressed based on the genotypes of the offspring.
When a tall plant crosses with a short plant, for example, some of the offspring will be tall and others will be short. The number of times the phenotypes (either tall or short) are expressed is counted to determine the phenotypic ratio. Based on the genotype, the phenotypic ratio will tell you how many of the offspring will be tall and how many will be short.
Genotype
The genotype is a term used in genetics to describe an individual's genetic makeup, which is made up of heritable genes.
The two alleles that are inherited for a particular gene are also referred to as a genotype.
Bb stands for the dominant allele and b stands for the recessive allele in the alphabetical representation of genotypes.
The expression of these genes determines an individual's physical characteristics, known as phenotypes.
The genotype is not the only factor that influences the phenotype; other factors such as inherited epigenetics and environmental factors also influence the phenotype.
As a result, neither all individuals with the same genotype nor all individuals who look-alike have the same appearance.
Genotypic ratio: Pattern of genotype-based offspring distribution (i.e. the genetic constitution determining the phenotype of an organism)
After a test cross, the genotypic ratio describes the number of times a genotype appears in the offspring. For example, a heterozygous dominant trait test cross between two organisms with the same genotype, Rr, will produce offspring with the genotypes RR, Rr, and rr. And in this example, the predicted genotypic ratio is 1:2:1.

Note:
The phenotypic ratio of short-haired small-eared, short-haired big-eared, long-haired small-eared, and long-haired big-eared babies from different breeding pairs can now be predicted. A dihybrid cross Punnett square or a phenotypic ratio calculator is used for this.