Monohybrid Cross (Leaving Cert Biology): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a monohybrid cross?
What is a monohybrid cross?
Genetic cross studying one gene
What is the F1 generation?
What is the F1 generation?
First generation offspring
What is the F2 generation?
What is the F2 generation?
Second generation offspring
Which letter type represents a dominant allele?
Which letter type represents a dominant allele?
Capital letter
What is a Punnett square used for?
What is a Punnett square used for?
Predict genotypes and phenotypes
In a BB x bb cross, what is the genotype of all F1 offspring?
In a BB x bb cross, what is the genotype of all F1 offspring?
Bb
In a BB (brown) x bb (blue) cross, what phenotype do all F1 offspring show?
In a BB (brown) x bb (blue) cross, what phenotype do all F1 offspring show?
Brown eyes
What is the phenotypic ratio from a Bb x Bb cross?
What is the phenotypic ratio from a Bb x Bb cross?
3 brown : 1 blue
What is the genotypic ratio from a Bb x Bb cross?
What is the genotypic ratio from a Bb x Bb cross?
1 BB : 2 Bb : 1 bb
How many different gametes can a Bb parent produce?
How many different gametes can a Bb parent produce?
Two types (B and b)
What happens to the recessive allele in a heterozygous individual?
What happens to the recessive allele in a heterozygous individual?
Masked by dominant allele
How many offspring from Bb x Bb have the brown-eyed phenotype?
How many offspring from Bb x Bb have the brown-eyed phenotype?
3 out of 4