you are given a red flower bearing pea plant a red flower bearing snapdragon plant How do - Biology - Principles of Inheritance and Variation

Question

you are given a red flower bearing pea plant & a red flower
bearing snapdragon plant How do you find the genotype of these
plants with respect to the flower colour? Comment upon the pattern
of inheritance seen in these two plants

G. Lakshmi · Accepted Answer

Inheritance
of flower colour in pea plant - Pisum sativum

Parent
RR x rr

(Red)
(White)

Gamete
Rr

F1 Rr
(Red)

This
inheritance pattern follows law of dominance, that
is between the two alleles

of the
flower colour (gene) the dominant allele is expressed(
phenotypically), over

the
recessive

In the
case of Antirrhinum(snap dragon) the dominant flower colour is red
White

in
recessive

Parent
RR x rr

(Red)
(white)

Gamete
R r

F1 R r
(Pink)

This
is the case of incomplete dominance; it is because
the allele for red colour is

not
completely dominant over its recessive allele, law of dominance not
exhibited

you are given a red flower bearing pea plant & a red flower bearing snapdragon plant. How do you find the genotype of these plants with respect to the flower colour? Comment upon the pattern of inheritance seen in these two plants.