Dihybrid Cross (Leaving Cert Biology): Quizzes
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13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is a dihybrid cross?
What is a dihybrid cross?
Mating where two separate genes studied
How many alleles does each gene have in a dihybrid cross?
How many alleles does each gene have in a dihybrid cross?
Two alleles
How many alleles for each gene does a gamete carry?
How many alleles for each gene does a gamete carry?
One allele
What tool is used to predict offspring combinations in a dihybrid cross?
What tool is used to predict offspring combinations in a dihybrid cross?
Punnett square
What does a dominant allele do?
What does a dominant allele do?
Masks the effect of recessive allele
What gametes can a TTPP parent produce?
What gametes can a TTPP parent produce?
Only TP
What is the F1 genotype from TTPP x ttpp?
What is the F1 genotype from TTPP x ttpp?
100% TtPp
What is the F1 phenotype from TTPP x ttpp?
What is the F1 phenotype from TTPP x ttpp?
All tall with purple flowers
How many different gametes can a TtPp parent produce?
How many different gametes can a TtPp parent produce?
Four gametes
What is the phenotypic ratio for ttpp x TtPp?
What is the phenotypic ratio for ttpp x TtPp?
1:1:1:1
How many different phenotypes result from ttpp x TtPp?
How many different phenotypes result from ttpp x TtPp?
Four phenotypes
What is the phenotypic ratio for TtPp x TtPp?
What is the phenotypic ratio for TtPp x TtPp?
9:3:3:1
What type of cross typically produces a 9:3:3:1 ratio?
What type of cross typically produces a 9:3:3:1 ratio?
Heterozygous x heterozygous dihybrid