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Biology
9th -
12thgrade
Punnett Squares: Mendelian (Regular) Dominance
30 questions
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- 1. Multiple Choice
Which is an example of a homozygous dominant genotype?
Tt
aa
AA
Aa
- 2. Multiple Choice
Which of the following represents a heterozygous genotype?
TT
tt
aa
Aa
- 3. Multiple Choice
Gregor Mendel used what to observe the passing of traits from one generation to the next?
Pea Plants
Dogs
Lily Flowers
Birds
- 4. Multiple ChoiceWhat is a punnett square?graph used to predict the possible genotypes of offspring in a given crossa graph used to predict the possible birth rate of offspring.a graph used to predict the possible behavioral characteristics an offspring could haveNone of the above
- 5. Multiple ChoiceIn a punnet square where are the parent alleles written?Top and inside the boxesOnly on the left and right side of the boxes.outside of the boxes (top and left side)All on the top side of the boxes
- 6. Multiple ChoiceWhich of the following choices demonstrates a ratio (in a punnett square).2/4 FF100/50 FF1/1 FF3/2 FF
- 7. Multiple ChoiceEach one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?25%1%10%0%
- 8. Multiple ChoiceAa, DD, bB, yy are all examples ofgenotypesphenotypes
- 9. Multiple Choice
In complete dominance AA and Aa always show up as
dominant
recessive
- 10. Multiple ChoiceWhat ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?0 in 41 in 42 in 44 in 4
- 11. Multiple ChoiceWhich of the following genotypes is homozygous dominant?AAaAAaa
- 12. Multiple ChoiceWhich of the following genotypes is heterozygous?BbBBbbB
- 13. Multiple ChoiceIn a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?rrRRRRR or Rr
- 14. Multiple ChoiceWhat you see, or the physical appearance.GenotypePhenotypeHomozygousHeterozygous
- 15. Multiple Choiceaa always shows up asdominantrecessive
- 16. Multiple Choice
Which choice best represents the genotype of the offspring of this cross?
1 Yy: 2 yy: 0 YY
2 Yy: 2 yy: 0 YY
3 Yy: 1 yy: 0 YY
1 Yy: 3 yy: 0 YY
- 17. Multiple Choice
A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color). What describes the phenotypic probability of the offspring?
100 % tan
100 % brown
50 % brown and 50% tan
75 % brown and 25 % tan
- 18. Multiple ChoiceA dihybrid cross shows the possible outcomes of _______two allelestwo parentstwo traits/charactersa self pollination
- 19. Multiple ChoiceWhat gamete possibilities could come from this parent's genotype?AB, AB, aB, aBAb, AB, Ab, abAb, Ab, Ab, AbAB, aB, ab, aB
- 20. Multiple ChoiceWhat goes in box 1AABbAABBaabbAaBb
- 21. Multiple Choice
What is the correct phenotype ratio when crossing two heterozygous parents in a dihybrid cross?
100% heterozygous
1:2:1
3:1
9:3:3:1
- 22. Multiple ChoiceWhat genotype is missing from this Punnett Square?RrYyRRYYrryyRrYY
- 23. Multiple ChoiceWhat is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?RyRRyyRrYyRryy
- 24. Multiple Choice
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
9/16
3/16
1/16
16/16
- 25. Multiple ChoiceUsing the dihybrid cross and key provided, what is the probability of the offspring being tall and white?9236
- 26. Multiple ChoiceWhich of the following identifies the gametes?ABCD
- 27. Multiple Choice
In order to determine the genotype of an individual exhibiting the dominant phenotype, we cross it with...
A homozygous dominant individual
A homozygous recessive individual
A heterozygous individual
- 28. Multiple Choice
What is the probability of getting a tt offspring in a cross between parents who are Tt and tt?
25%
50%
75%
100%
- 29. Multiple Choice
Offspring that are 100% heterozygous would result from which cross?
Two homozygous dominant parents
One homozygous dominant and one homozygous recessive parents
Two heterozygous parents
- 30. Multiple Choice
The idea that alleles separate from each other so that each gamete only carries a single copy of an allele is the...
Law of segregation
Law of independent assortment
Law of gravity
- Answer choicesTagsAnswer choicesTags