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Biology
9th -
12thgrade
Genetics: Codominance, polygenic inheritance, & epistasis
27 questions
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- 1. Multiple Choice
Condition in which both alleles for a gene are expressed when present - both traits are visible
Codominance
Dominance
Complete dominance
Incomplete dominance
- 2. Multiple Choicethe characteristics of a trait that you can seegenotypephenotype
- 3. Multiple Choicethe genetic code (make up) of a traitgenotypephenotype
- 4. Multiple Choiceidentical alleles, two caps or two lowercasehomozygousheterozygous
- 5. Multiple Choicetwo different alleles, one cap one lowercasehomozygousheterozygous
- 6. Multiple Choice
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
Incomplete Dominance
Codominance
Independent assortment
Recessive inheritance
- 7. Multiple Choice
A roan cow shows codominance in fur color (orange and white hairs). What is the phenotypic ratio expected if a roan cow and a roan steer mate together?
4: roan
1: Orange : 1 White
2 Orange: 2 roan: 0 White
1: Orange: 2 roan: 1 White
- 8. Multiple ChoiceA breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:all blackall whiteall grayspeckled black and white
- 9. Multiple ChoiceThis type of inheritance pattern shows BOTH traits in possible offspringcomplete dominanceincomplete dominanceco-dominancedominant pattern
- 10. Multiple ChoiceIn some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.2 red: 2 speckled: 0 white4 red: 0 speckled: 0 white0 red: 4 speckled: 0 white0 red: 2 speckled: 2 white - 11. Multiple ChoiceThe differences in the sets of alleles between individuals in a population is...allelegenotypegenetic variationgene
- 12. Multiple ChoiceWhat type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?CodominanceIncomplete dominancePolygenic traits
- 13. Multiple ChoiceAn example of polygenic inheritance is...Skin Colorhitch hikers thumbblood types
- 14. Multiple ChoiceHow many alleles does someone have for a genotype?1234
- 15. Multiple ChoiceWhich of the following is a phenotype?Aared hairheterozygousDNA
- 16. Multiple ChoiceThe different forms of a gene are calledtraitspollinatorsalleleshybrids
- 17. Multiple Choice
Which genotype would result in an individual with medium-colored skin? (Hint: Look at the number of dominant vs recessive alleles, not the letter).
AabbCC
AABBcc
AaBbcc
Aabbcc
- 18. Multiple ChoiceWhat pattern of inheritance is shown in this image?CodominanceIncomplete dominancePolygenic traits
- 19. Multiple ChoiceWhat type of inheritance is determined by multiple genes located on different chromosomes and there can be a range of possible traits? Ex: Eye ColorCodominanceIncomplete dominancePolygenic traits
- 20. Multiple ChoiceAn interaction where one gene masks another gene is called:Polygenic TraitsEpistasisX-Chromosome InactivationX-linked traits (same as sex-linked)
- 21. Multiple ChoiceWhen there are multiple genes that affect a trait.Polygenic TraitsEpistasisX-Chromosome InactivationX-linked traits (same as sex-linked)
- 22. Multiple ChoiceCoat color in labs is an example of:Polygenic TraitsEpistasisX-Chromosome InactivationX-linked traits (same as sex-linked)
- 23. Multiple ChoiceSkin color, height and eye color are examples of:Polygenic TraitsEpistasisX-Chromosome InactivationX-linked traits (same as sex-linked)
- 24. Multiple ChoiceType of Trait that is controlled by MANY genes at once. Many Genes will 'contribute' to one phenotype.Multiple Allele TraitPolygenic TraitMonogenic TraitCo-Dominant Trait
- 25. Multiple Choice
B = Black, b = Chocolate. Some labs inherit black or brown fur alleles but have light fur. This graphic shows an example of...
Codominance
Epistasis
Mendelian Dominance
Polygenic inheritance
- 26. Multiple Choice
B = Black, b = Chocolate. ee = no pigment
What is the phenotype of a dog that is Bbee?
Black
Chocolate
Yellow Lab (brown skin)
White lab (black skin)
- 27. Multiple Choice
B = Black, b = Chocolate. ee = no pigment
What is the phenotype of a dog that is bbEe?
Black
Chocolate
Yellow Lab (brown skin)
White lab (black skin)
- Answer choicesTagsAnswer choicesTags