DiHybrid Cross Practice
Biology
7th - 12th Grade
NGSS covered
Used 816+ times
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This quiz focuses on dihybrid crosses in genetics, specifically examining the inheritance patterns of two traits simultaneously in organisms such as pea plants and beetles. The content is appropriate for high school biology students in grades 9-12, as it requires mastery of fundamental Mendelian genetics principles including genotype notation, Punnett square construction, and probability calculations. Students must demonstrate understanding of homozygous and heterozygous conditions, dominant and recessive alleles, and the ability to predict offspring ratios from complex genetic crosses. The problems demand computational skills to calculate percentages and fractions, along with conceptual knowledge of how independent assortment affects trait inheritance. Students need to interpret genetic notation, construct or analyze 4x4 Punnett squares for dihybrid crosses, and apply mathematical reasoning to determine the probability of specific genotypic and phenotypic outcomes. This quiz was created by a classroom teacher who designed it for students studying high school biology genetics. This assessment serves as an excellent tool for reinforcing dihybrid cross concepts through varied problem types that challenge students to apply theoretical knowledge to practical scenarios. Teachers can utilize this quiz as a formative assessment to gauge student understanding before major tests, assign it as homework to reinforce classroom instruction, or incorporate it into review sessions preparing for unit examinations. The diverse question formats make it ideal for warm-up activities that activate prior knowledge or as guided practice during lessons on advanced genetics topics. This quiz effectively supports instruction by providing immediate feedback on student comprehension of complex inheritance patterns and mathematical applications in biology, aligning with standards such as NGSS HS-LS3-2 and HS-LS3-3 which address inheritance patterns and environmental impacts on gene expression.
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What genotype is missing from this Punnett Square?
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
9/16
3/16
1/16
16/16
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
NGSS.HS-LS3-3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
Tags
NGSS.HS-LS3-3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits?
Tags
NGSS.HS-LS3-3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
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