Punnett Square Mastery

Froggy Jumps

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Test your genetics cross skills.

Hala

Kuwait

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Punnett Square Mastery


Froggy Jumps Punnett Square MasteryVersion en ligne Test your genetics cross skills. par Hala 1 What is the purpose of a Punnett square? a To predict possible genotypes of offspring from a cross b To measure DNA sequence length c To identify mutations in parents 2 What do the letters inside the Punnett square represent? a Actual offspring phenotypes b Possible gamete genotypes from each parent c Chromosome numbers 3 A monohybrid cross involves how many traits? a No traits b Two traits c One trait 4 If a heterozygous cross is Aa x Aa, what phenotype ratio can you expect if A is dominant? a 3:1 b 1:1 c 0:4 5 In a Punnett square, what do the top and side labels represent? a Gametes from each parent b Offspring numbers c Phenotypes only 6 What does a Punnett square not directly show? a Actual offspring ages b Genotype probabilities c Phenotypic ratios 7 Which cross would produce a 1:2:1 genotype ratio for a single gene with two alleles? a AA x aa b Aa x Aa c AA x Aa 8 If allele A is dominant, what is the phenotype of Aa? a Neither trait expressed b Recessive trait expressed c Dominant trait expressed 9 What is a dihybrid cross? a Cross with no offspring b Cross involving one trait c Cross involving two different traits 10 In a Punnett square for a dihybrid cross AaBb x AaBb, how many phenotypic classes are expected? a Eight b Two c Four