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

Living beings are made of organic and inorganic substances, Living beings a...

Living beings are made of organic and inorganic substances. According to the complexity of their molecules how can each of those substances be classified? Inorganic substances

Describe dextran , Dextran is a glucose polymer where the glucose re...

Dextran is a glucose polymer where the glucose residues are mainly related by α1-6 bonds. Moreover, a few branches also happen. These are classically formed by α1-2, α1-3 or α1-4 b

Define the term hot water blanching, Define the term Hot water blanching? ...

Define the term Hot water blanching? A appropriate water-blanching process in traditional processing is as follows: The sliced material is placed on a square piece of cl

Currents in estuaries, Currents in Estuaries Currents in estuaries are...

Currents in Estuaries Currents in estuaries are caused primarily by tidal action and river flow. Currents are generally confined to channels but velocities up to several knots

Geotropism - root and shoot morphogenesis, Geotropism - Root and Shoot Morp...

Geotropism - Root and Shoot Morphogenesis Roots always grow towards gravity. The lot threshold of geotropic response requires as little time as one minute Gravity pulls auxin

How rapidly a person breathes, Considering the nature of negative-feedback ...

Considering the nature of negative-feedback control and the function of the respiratory system, what effect do you predict that a decrease in CO2 in the internal environment would

Calf diptheria, Calf diptheria The disease is a serious one usually affect...

Calf diptheria The disease is a serious one usually affecting calves up to 2 years of age. The lesions are confined to larynx and pharynx, and consist of well-defined areas of nec

PHYLUM ANNELIDA, GERENAL CHARACTERICS OF PHYLUM ANNELIDA

GERENAL CHARACTERICS OF PHYLUM ANNELIDA

Explain in detail about the optic nerve, Explain in detail about the optic ...

Explain in detail about the optic nerve The optic nerve contains more than one million axons that initiate in the ganglion cell layer of the retina. This structure originatcs a

State in brief about the neuropsychological tests, State in brief about the...

State in brief about the Neuropsychological tests Neuropsychological tests have to be constructed using the psychometric approach the interpretation of test performance would n

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