Card Set Information
Higher Biology - Unit Two - Monohybrid Cross
What is a monohybrid cross?
A cross between two true-breeding parents which differ by one respect
What type of variation did Gregor Mendel's crosses with peas show?
What is the phenotypic ratio always produced in a monohybrid cross?
3 : 1
Why is the exact phenotypic ratio, in a monohybrid cross, rarely produced?
As fertilisation is a
element of chance
The "Principle of Segregation" states that the alles of a gene exist in pairs but when gametes are formed the members of each pair pass into _______ gametes?
What is Incomplete dominance?
When one allele of a gene is not completely dominant over the other allele
What is a backcross?
Crossing an organism with an unknown genetype with an organism showing the recessive characteristics and examining the offspring
What must be the geneotype of parent Y?
Y x tt
What must be the genotype of parent Y?
Y x tt
Tt : tt (simplified ratio)