In a particular type of wildflower, WT color is deep purple, andthe plants are true?breeding. In one
true?breeding mutant stock, the flowers have reducedpigmentation resulting in a lavender coloration.
In a different true breeding mutant stock, the flowers lackpigmentation and are therefore white.
When a lavender?flowered plant from the first mutant stock wascrossed to a white flowered plant
from the second mutant stock all the resulting F1 generation haddeep purple flowers. The F1 plants
were permitted to self fertilize and produced an F2 generation.The 277 F2 plants were 157 deep
purple : 71 white : 49 lavender.
A] From these results explain using appropriate genetic notationand drawing all crosses explain the
mode of inheritance / gene interaction.
B] What progeny phenotypes and their frequencies would beproduced if the lavender plants from the
above F2 were allowed to self fertilize.
2)Found on chromosome 4 in humans, two blood group alleles, LMand LN, are equally expressed in
heterozygous individuals. These individuals are said to be inthe MN blood group. Assume that a man
and a woman, both in the MN blood group, have a child.
A] What is the probability that this child will be a girl and bein the MN blood group (2.5 marks)?
B] What is the probability that the next two children born tothis couple will be in the MN blood group?
In a particular type of wildflower, WT color is deep purple, andthe plants are true?breeding. In one
true?breeding mutant stock, the flowers have reducedpigmentation resulting in a lavender coloration.
In a different true breeding mutant stock, the flowers lackpigmentation and are therefore white.
When a lavender?flowered plant from the first mutant stock wascrossed to a white flowered plant
from the second mutant stock all the resulting F1 generation haddeep purple flowers. The F1 plants
were permitted to self fertilize and produced an F2 generation.The 277 F2 plants were 157 deep
purple : 71 white : 49 lavender.
A] From these results explain using appropriate genetic notationand drawing all crosses explain the
mode of inheritance / gene interaction.
B] What progeny phenotypes and their frequencies would beproduced if the lavender plants from the
above F2 were allowed to self fertilize.
2)Found on chromosome 4 in humans, two blood group alleles, LMand LN, are equally expressed in
heterozygous individuals. These individuals are said to be inthe MN blood group. Assume that a man
and a woman, both in the MN blood group, have a child.
A] What is the probability that this child will be a girl and bein the MN blood group (2.5 marks)?
B] What is the probability that the next two children born tothis couple will be in the MN blood group?
