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

Fensom and spanner electroosmotic flow hypothesis, Fensom and Spanner Elect...

Fensom and Spanner Electroosmotic Flow Hypothesis In electroosmosis the ions flow across a membrane in response to electrical gradient. Ions pull along water and other content

What are all possibilities of genotypes and phenotypes, What are all possib...

What are all possibilities of genotypes and phenotypes formed in the combination of alleles responsible for the production of factor VIII? Considering the alleles X and Xh, whe

Types of amoeboid movements, Types of Amoeboid Movements As the amoeba...

Types of Amoeboid Movements As the amoeba's cell body throws out one or a few pseudopodial lobes, a temporary rear end or uroid is pulled along. The central, more fluid protop

Assessment of peripheral vascular disorders - history, Assessment of Periph...

Assessment of Peripheral Vascular Disorders History Obtain the following information by interviewing the patient and family members Previous vascular surgery, previ

Describe what happens during activation of the lac operon, Describe what ha...

Describe what happens during activation of the lac operon. Lactose binds to the repressor protein, which causes the repressor protein to be released from the operator site. Th

Cellular strategies to improve bone formation at implants, Molecular and ce...

Molecular and cellular strategies to improve bone formation at implants The healing response of biological tissues to the oxide surface is sensitive to the way in which the sur

Physical concepts of plant water relation - osmosis, Physical Concepts of P...

Physical Concepts of Plant Water Relation - Osmosis Osmosis is a special case of diffusion. Here, the movement of water (solvent) takes place from a region of higher c

Describe physical inactivity in lifestyle risk factors, Describe Physical I...

Describe Physical Inactivity in lifestyle risk factors? Prospective epidemiological studies have shown that a sedentary lifestyle is associated with an adverse effect on the ri

Pneumothorax, K.L. is a 30-year-old Caucasian male was brought to Emergency...

K.L. is a 30-year-old Caucasian male was brought to Emergency Department (ED) after a bicycle accident.  He was hit from behind by a compact car traveling at 35 miles per hour.  On

Define behaviour modification - combat from obesity problem, Define Behavio...

Define Behaviour modification - combat from obesity Problem? It is very important. A heavy parental hand and parent attitude and behaviours towards child's eating, interferes i

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