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- 1. Multiple ChoiceTwo brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?0 %25%50%75%
- 2. Multiple ChoiceDominant alleles are represented by a:Male genelowercase letterrecessive traitcapital letter
- 3. Multiple ChoiceWhich of the following is a phenotype?Aared hairheterozygous genesmutated DNA
- 4. Multiple ChoiceAa ishomozygous (purebred)heterozygous (hybrid)
- 5. Multiple ChoiceIn a heterozygous genotype, the ___________ allele takes over in the phenotype.recessivedominantlower case letterboth
- 6. Multiple ChoiceG = green, g = yellow
The genotype for a yellow plant is...GGGgggall of the choices result in yellow - 7. Multiple ChoiceHow many pairs of chromosomes are in your cells?23191210
- 8. Multiple ChoiceWhy are your chromosomes arranged in pairs?Because DNA has a double-helix structure.Because pairs are able to divide more easily.Because you get one from your mother and one from your father.Scientists aren't sure.
- 9. Multiple ChoiceCurly hair is dominant and straight hair is recessive.
If a curly-haired man has a baby with a straight-haired woman, what will happen?The baby will probably have straight hair.The baby will definitely have straight hair.The baby will probably have curly hair.The baby will definitely have curly hair. - 10. Multiple ChoiceWhich of the following statements is true of asexual reproduction?The offspring are identical to the parent.Two parents join to make an offspring.Coral animals use this method of reproduction.The offspring are similar, but not identical to either parent.
- 11. Multiple ChoiceWhat kind of traits show themselves?shy traitsbrave traitsrecessive traitsdominant traits
- 12. Multiple ChoiceWhat is the heterozygous genotype for having brown eyes?
(Remember: Brown (B) is dominant over blue (b).)BBBbbb - 13. Multiple ChoiceWhat is the homozygous genotype for having brown eyes?
(Remember: Brown (B) is dominant and blue (b) is recessive.)BBBbbb - 14. Multiple ChoiceWhat is the phenotype for eye color "bb"?Brown eyesBlue eyesGreen eyesHazel eyes
- 15. Multiple ChoiceWhat does heterozygous mean?An organism that has the same genes for a trait (TT or tt)An organism that has different genes for a trait (Tt)When neither gene is fully dominant; offspring is a mixture of boththe different forms of a trait (hair color--> brown, blonde, red
- 16. Multiple Choicethe passing of genetic traits from parent to offspring.hereditytraitgeneallele
- 17. Multiple ChoiceAn allele whose trait only shows up when no dominant allele is present.hidden alleledominant allelerecessive allelepresent allele
- 18. Multiple ChoiceA single piece of coiled DNA found in the cells; contains genes that encode traits.genechromosometraitDNA
- 19. Multiple ChoiceWhat characteristic would a child not inherit from parents?freckleseye colorhair styledimples
- 20. Multiple ChoiceR=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?offspring will be Rroffspring will be RRround seeds will be recessive to wrinkledWrinkled will be observed in half of offspring - 21. Multiple ChoiceW=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?none3/41/2all - 22. Multiple ChoiceWhich of the following alleles is homozygous recessive?TtttTTT
- 23. Multiple ChoiceDominant alleles are represented by a:Male genelowercase letterrecessive traitcapital letter
- 24. Multiple ChoiceWhich of the following is NOT a genotype?heterozygousa traitBbhomozygous recessive
- 25. Multiple ChoiceWhich of the following is a phenotype?Aared hairheterozygousDNA
- 26. Multiple ChoiceAA and Aa always show up asdominantrecessive
- 27. Multiple Choiceaa always shows up asdominantrecessive
- 28. Multiple ChoiceAa ishomozygousheterozygous
- 29. Multiple Choice
Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.25%0%75%50% - 30. Multiple ChoiceIf the dominant allele (B) represents brown hair and the recessive allele (b) represents blonde hair, which offspring represents a homozygous recessive genotype?BBBbblondebb
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