Checker board (punnet''s square) method, Biology

CHECKER BOARD (PUNNET'S SQUARE) METHOD

1.         If the genotypes of the parents are known, the genotypes of their offspring can be easily predicted with the help of a chart called Punnett square.

2.         It is named by an English geneticist Reginald Crundall Punnett (1875-1967) who first used this method in 1927.

3.         Its advantage lies in minimising the errors which can creep in when listing all possible combinations of gametes.

4.         Each box of the square represents an individual offspring.

5.         First the alleles in the gametes produced by the parents are determined.

6.         Now the boxes are filled in by combining the alleles of male and female gametes, working horizontally or vertically in each row.

7.         The allele combinations in the boxes show the possible genotypes of the F1 generation. The ratios of the genotypes can then be worked out.

Posted Date: 10/10/2012 3:38:31 AM | Location : United States







Related Discussions:- Checker board (punnet''s square) method, Assignment Help, Ask Question on Checker board (punnet''s square) method, Get Answer, Expert's Help, Checker board (punnet''s square) method Discussions

Write discussion on Checker board (punnet''s square) method
Your posts are moderated
Related Questions
why is it necessary to grind food before the testng?

Q. What is the incubation period of an infection? The Incubation period is the time interval between the infection by an agent that causes disease and the first signs or sympto

1.   Northern blotting The quantity of rna species can be quantified by calculating the quantity of rna through northern blotting which provide size and sequence information

Electrocardiogram results show a shortened QT interval and an increase in the P-R interval (i.e., decreased duration of action potential and decreased conduction velocity). Laborat

Illustrate about the primary minerals The minerals originally formed when once -heated magma (molten rock) cooled and formed solid igneous rocks (explained below) are called as

Q. What is Phenylketonuria? The essential amino acid phenylketonuria is utilized for tissue protein synthesis and hydroxylated to form tyrosine. The hydroxylation reaction requ

discuss the merits nd demerits of five kingdom classification.

Thus animals store surplus carbohydrate as glycogen; plants do so in form of starch. Starch is producing in the stroma of chloroplasts and stored there as starch grains. The Starch

When comparing the DNA of a calfs liver and thymus, which would be predicted to have more DNA and why? What are the differences of the DNA between the two?

Define about the Anthropometry Method? Anthropometry refers to the measurement of the size and proportions of' the human body. Anthropometric prediction equations estimate body