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

Life forms - qualitative characters, Life Forms - Qualitative Characters ...

Life Forms - Qualitative Characters The form and structure of terrestrial communities are determined by the nature of vegetation. Vegetation may be classified according to gro

Explain nutritional support management - cancer patient, Explain about the ...

Explain about the Nutritional Support Management? Tube feeding is usually started. If tube feeding is not possible, parenteral nutrition through peripheral vein or through the

Stomach, Describe about the stomach

Describe about the stomach

What event marks the beginning of the menstrual cycle, Q. What event marks ...

Q. What event marks the beginning of the menstrual cycle? What is the blood concentration of FSH, LH, estrogen and progesterone in this phase of the cycle? By convention the me

Principle for determination of blood glucose, Define Principle for Determin...

Define Principle for Determination of Blood Glucose by Nelson Somogyi Method? Proteins are precipitated from the sample and protein free filtrate is heated with alkaline copper

Describe frequently respiratory infactions heart disease, Describe frequent...

Describe frequently respiratory infactions to recoganize congenital heart disease ? Frequent Respiratory Infections: Respiratory infections that are frequent, severe and diffic

What is muller manoeuver explain in details, What is Muller Manoeuver expla...

What is Muller Manoeuver explain in details? In this manoeuver, patient forcibly inspires while the nose is held closed and mouth firmly sealed for 10 seconds. It exaggerates t

Trends in succession - ecology, Trends in Succession - Ecology Success...

Trends in Succession - Ecology Succession is an important aspect of change in ecosystems and a simple description of successional communities the beginning of the story. We ne

What is the main risk factor for lung cancer, Q. What is the main risk fact...

Q. What is the main risk factor for lung cancer? The major risk factor for lung cancer is tobacco smoking. In The large number of cases of this kind of cancer is due to the inc

For the biological diversity is mitosis or meiosis, For the biological dive...

For the biological diversity is mitosis or meiosis the more important process? Meiosis is the cell division process that permits the formation of gametes to sexual reproduction

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