OBJECT To analyse seed sample of pea for mendelian monohybrid ratio of 3:1.

 EXPERIMENT 08

OBJECT 

To analyse seed sample of pea for mendelian monohybrid ratio of 3:1.

Requirement- Pea seed sample, enemel tray, petridishes, note book, pencil/pen.

Procedure - 

1.Take a lot of about 100 pea seed in a enemel tray. 

2.seprete out round and wrinkles seeds and put them in separate petridishes. 

3.Note down the number of round and wrinkles seeds and calculate their approximate ratio. 

4.Repeat the process for the other contrasting trait of the seed I.e yellow and green colour. 

Observation -

Present your finding in the form of table given below. Data related to two finding is given in the table record your finding in Same conclusion. 

Conclusion 

The, forms  in both that trait of pea seed (seed shape and seed colours) show an approximate ratio of 3 :1 this ratio is exactly the same as  obtained by mendel for monohybrid crosses  and indicate that dominant and recessive  form of seed shape and seed colour exist in the ratio of 3:1 in the population of pea seed. 

Precaution 

1. Take a sufficiently large number of seed lot for analysis to minimize the error. 

2. Observe the contrasting form of the trait carefully.