A genetic screening to identify the phyC –deficient mutants and the type of phenotypes examined for this screening. Given: It is given in the experiment that the plants in which the gene for phy C was overexpressed shows an increase in the leaf area relative to the wild type. Table: Phtochromes phyA, phyB, phyC, and phyD were separately overexpressed in Arabidopsis , and 18-day-old seedlings were examined with regard to leaf area. Gene expression Leaf area (mm 2 ) Wild-type 22 phyA overexpressed 21 phyB overexpressed 21 phyC overexpressed 31 phyD overexpressed 22 Introduction: The genetic screen is an important technique that can be used to identify certain genes involved in a particular function. It is an experimental technique in which individuals that possess a certain type of phenotype are identified from a mutagenized population. Genetic screens are helpful in studying functions of genes of interest.

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Chapter 36, Problem 2Q

Summary Introduction

To review:

A genetic screening to identify the phyC –deficient mutants and the type of phenotypes examined for this screening.

Given:

It is given in the experiment that the plants in which the gene for phy C was overexpressed shows an increase in the leaf area relative to the wild type.

Table: Phtochromes phyA, phyB, phyC, and phyD were separately overexpressed in Arabidopsis, and 18-day-old seedlings were examined with regard to leaf area.

Gene expression Leaf area (mm²)

Wild-type 22

phyA overexpressed 21

phyB overexpressed 21

phyC overexpressed 31

phyD overexpressed 22

Introduction:

The genetic screen is an important technique that can be used to identify certain genes involved in a particular function. It is an experimental technique in which individuals that possess a certain type of phenotype are identified from a mutagenized population. Genetic screens are helpful in studying functions of genes of interest.

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