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

Assignment Help:

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.


Related Discussions:- Checker board (punnet''s square) method

How much milk require by patient in a day, How many protein require patien...

How many protein require patient in a day Patients who require high protein diets are encouraged to drink 600-800 mL of milk a day. Now, you must be wondering how one can consu

Observing the development of flowers into fruit, Observing the development ...

Observing the development of flowers into fruit Collect specimens of flowers in dissimilar stages of maturity from newly opened buds to specimens in which the petals have falle

Water absorption in digestive system of mammals and bird, Q. Compared to ma...

Q. Compared to mammals do birds absorb more or less water in their digestive system? Why is this phenomenon an adaptation to flight? Bird feces are more liquid than mammal a fe

Define blood pressure, Blood Pressure Blood pressure may be defined as ...

Blood Pressure Blood pressure may be defined as the force or pressure which the blood exerts on the walls of the artery. Blood pressure varies with the age of the individual. B

Source of the bacteria of salmonellosis, Q. Source of the bacteria of Salmo...

Q. Source of the bacteria of Salmonellosis? The initial source of the bacteria is the intestinal tract of birds, reptiles, farm animals, humans and occasionally insects. As int

Myocardial contractility, Inspiration decreases the pressure in the central...

Inspiration decreases the pressure in the central veins and thus increases the pressure gradient between the peripheral and central veins thus augmenting venous return. Skeletal mu

Filariasis, F i l a r i a s i s Animal filariasis is an import...

F i l a r i a s i s Animal filariasis is an important helminthic infection caused by large number of parasites. In bovines, it is caused by setaria, stephanofilaria, p

The kidney, diseases of the kidney and their remedies

diseases of the kidney and their remedies

Chlorofluorocarbons cause global problem, In what way do chlorofluorocarbon...

In what way do chlorofluorocarbons (CFCs) cause global problems? Chlorofluorocarbons react with and deplete the ozone in the ozone layer. This permits more ultra-violet light f

Show thw cellular structure of protein synthesis, Q. What is the cellular s...

Q. What is the cellular structure to which mRNA molecules bind to start the protein synthesis? To make proteins mRNA molecules essentially associate to ribosomes. Ribosomes hav

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd