OBJECTIVE & FILL IN THE BLANKS OF LINKAGE AND CROSSING OVER
rubabMultiple Choice Questions (MCQs) I. The phenomenon in which genes are present on the same chromosomes is: (a) Cross over (b) Segregation (c) Linkage(d) assortment The linked gene does not…
SUBJECTIVE & SHORT QUESTIONS OF LINKAGE AND CROSSING OVER
SUBJECTIVE QUESTIONS What is gene linkage? Demonstrate it with examples. Write note on linkage groups. Describe crossing over. What is linkage map? How are they constructed? Explain. Give different…
Functions of Roots
sidraI. Roots anchor the plant to the soil. They absorb water and minerals for plants. They store reserve food. Sonic roots are used for clinging. Some roots are used…
DEFINITION & KEY POINTS OF LINKAGE AND CROSSING OVER
DEFINITIONS TERMS Linkage group A chromosome carries its linked genes en bloc in the form of a linkage group. Crossing over The exchange of segments between non-sister chromatids of …
MORPHOLOGICAL CHARACTERS OF ROOT
The cylindrical plane organ without chlorophyll, growing towards the gravity is called root. Roots have following morphological characters Kinds of Roots There are two groups of roots: Tap root and…
DETECTION OF LINKAGE
There are different methods to detect linkages among genes. Some of these are: Detection of linkage by PD/NPD ratio The Parental generation (PD) to non-parental generation ratio gives indication about…
Construction of Linkage Maps
A linkage map is a chromosome map of a species that shows the position of its known genes or markers relative to each other, rather than as specific physical points…
Crossing over
The exchange of segments between non-sister chromatids of homologous chromosomes during meiosis is called crossing over. Linked genes can be separated by crossing over. Two genes with closer gene loci…
GENE LINKAGE
The genes located on the same chromosome are called linked genes. The phenomenon of staying together of all the genes of a chromosome is called linkage. Every organism possesses numerous…
OBJECTIVES & FILL IN THE BLANKS OF CELL: Plasma membran & Cytoplasm
Multiple Choice Questions (MCQs) Amount of protein in cell membrane is: (a) 10% (b) 30% (c) 60% (d) 20% Amount of lipids in cell membrane is: (a) 10% (b) 30% …