The different colours of flower Miabills jalapa is the result of blending of phenotype not genes themselves. Explain it.

If four o' clock plants, the gene for red flower colour (R) is incompletely dominant over the gene for white flower colour (r), hence the plants heterozygous for flower colour (Rr) have pink flower. What will be the ratio of offsprings in a cross between the red flowers and pink flowers ?

Take three different colour sheets , place one over the other and draw a triangle on the top sheet. Cut the sheets to get triangles of different colour which are identical. Mark the vertices and the angles as shown. Place the interior angles angle1,angle2 and angle3 on a straight line, adjacent to each other, without leaving any gap. What can you say about the total measure of the three angles angle1,angle2 and angle3 ? Can you use the same figure to explain the ''Exterior angle property'' of a triangle ? If a side of a triangle is stretched, the exterior angle so formed is equal to the sum of the two remote interior angles.

When two different genes came from same parent they tend to remain together. Write the observed phenotypic ratio.

Assertion : The pink coloured flowers appear in F_(2) generation of plant Mirabilis jalapa Reason : This is observed due epistatic suppression of white colour alleles in one of parental flowers by red colour alleles

Assertion : Variety of fruit colours in Cucurbita pepo is result of recessive epistasis Reason : In recessive epistatsis, a recessive gene at one locus engances the expression of another gene, at a diferent locus.

Assertion: Intermediate phenotype pink coloured flower is seen in F_1 generation showing incomplete dominance. Reason: One allele is not completely dominant to another allele during alletic interaction.

When two different genes came from same parent they tend to remain together. (i) What is the name of this phenomenon? (ii) Draw the cross with suitable example. (iii) Write the observed phenotypic ratio.

'Trihybrid Cross'' Cross between homozygous parents that differ in three pairs of contrasting characters. It forms 8 different gametes and 64 different zygotes. Single phenotype is controlled by more than one set of genes. It demonstrates the Mednel's laws are applicable to the inheritance of multiple traits.

Explain the role of genes in the formation of purple colour in the flowers of Pisum sativum.