Despite high level of heterozygosity, the progeny derived from a seed of cross pollinated plant was found to be completely uniform. One reason can be

How can the pea plant be prevented from self pollination? How is cross pollination carried out?

Assertion. A pure-line is the progeny of a large number of heterozygous self pollinated plants. Reason. In this method, a large number of plants with desired characters are selected from a genetically mixed population.

Plants which complete their life cycle in one year from seed to flower, fruit and seed and then die, are called

Long Answer Questions Five mark QUESTIONS FROM CBSE BOARD EXAMINATIONS : (a) Asa senior biology student, you have been asked to demonstrate to the students of secondary level in your school, the procedure(s) that shall ensure cross pollination in a hermaphrodite flower. List the different steps that you would suggest and provide reasons for each one of them.

A pure homozygous pea plant with yellow round seeds is crossed with a pure homozygous pea plant with green wrinkled seeds. Their progeny produced is allowed to undergo self - pollination. It produces four different phenotypes . Each phenotype is an expression of different types of genotypes. Select the correct option from the table.

A pure homozygous pea plant with yellow round seeds is crossed with a pure homozygous pea plant with green wrinkled seeds. Their progeny produced is allowed to undergo self - pollination. It produces four different phenotypes . Each phenotype is an expression of different types of genotypes. Select the correct option from the table.

(a) Explain a monohybrid cross taking seed coat colour as a trait 1n Pisum sativum. Work out the cross upto F generation. (b) State the laws of inheritance that can be derived from such a cross. (c) How is the phenotypic ratio of F2 generation different in a dihybrid cross?

(a) Explain a monohybrid cross taking seed coat colour as a trait 1n Pisum sativum. Work out the cross upto F generation. (b) State the laws of inheritance that can be derived from such a cross. (c) How is the phenotypic ratio of F2 generation different in a dihybrid cross?