Question

The graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross in called
A. Pedigree analysis
B. Punnett square
C. Chromosome map
D. Genotypic ratio
E. Karyotype

Answer 1

The Punnett square may be a square diagram that wants to forecast the genotypes of a specific cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach. The diagram is employed by biologists to work out the probability of an offspring having a specific genotype.

Complete answer:
Let's discuss the option and find the correct answer.
A. Pedigree analysis : Pedigree charts are diagrams that appear the phenotypes and/or genotypes for a particular organism and its ancestors. While commonly used in human families to track genetic diseases, they can be used for any species and any inherited trait.A record of inheritance of certain genetic traits for two or more generations presented within the sort of a diagram or genealogy is named Pedigree analysis. Hence option A is incorrect.
B. Punnett square : A Punnett square permits the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes. A Punnett square is often wont to determine a missing genotype supporting the opposite genotypes involved during a cross. It is a graphical representation to indicate all possible union of gametes during fertilization and to calculate the probability of all possible genotypes of offspring in a genetic cross. Hence option B is correct.
C. Chromosome map : a way utilized in autosomal DNA testing which allows the testee to work out which segments of DNA came from which ancestor. In order to map DNA segments on specific chromosomes it's necessary to check a variety of close family relatives. Hence option C is incorrect.
D. Genotypic ratio : Ratio, in which the presentation of an individual’s genetic constitution with respect to a single character or set of characters. Hence option D is incorrect.
E. Karyotype : A karyotype is just an image of an individual's chromosomes. In order to urge this picture, the chromosomes are isolated, stained, and examined under the microscope. The number and aspect of chromosomes within the nucleus of a eukaryotic cell. Hence option E is incorrect.

Hence option B: punnett square is the correct answer.

Note: One of the simplest ways to calculate the mathematical probability of assuming a selected trait was invented by an English Geneticist named Reginald Punnett. His technique was thus traditionally received as Punnett square. It is the only graphical way of discovering all possible combinations of genotypes which will occur in offspring.