Question

Imagine hypothetically there is a trait of "dream entering", which gives you the ability to enter other people's dreams (like in the movie Inception). The two homozygous traits are the ability to enter and control others' dreams (1,L) and without the ability to enter dreams (LI), while the heterozygous trait is only an ability to enter the dreams of others' (L). A dream enterer mates with a dream controller. Show the Punnett Square (1). What are the phenotypic and genotypic ratios; be sure to label (2). What is one of the possible modes of inheritance occurring here (1)?

Answer 1

dream enterer is I1I2 and dream controller is I1I1

so the cross is I1I2 * I1I1

	I1	I2
I1	I1I1 (dream controller)	I1I2 ( dream enterer)

so the phenotypic ratio is

dream controller : dream enterer =1:1

genotypic ratio is

I1I1:I1I2=1:1

here homozygotes I1I1 are dream enterer as well as dream controller but heterozygotes are I1I2 can only enter to others dreams and I2I2 cannot enter or control others dreams here heterozygotes shows an intermediate phenotype so mode of inheritance is incomplete dominance.