- 1. Traits are characteristics that can only be passed from a (n) ____________ thing to its _____________
A) single celled, nucleus B) asexual, organs C) living, ancestors D) living, offspring
- 2. The process by which traits are passed from parents to offspring is called
A) heredity B) dominance C) meiosis D) recessive genes
- 3. For each trait, there are __________ allele possibilities
A) 2 B) 4 gamete C) unlimited D) 1
- 4. Genetic make up of an organism
A) phenotype B) alleles C) genotype D) genotypic
- 5. The physical trait that is expressed in an individual
A) genotype B) homozygous C) phenotype D) heterozygous
A) Punnett Square B) traits C) alleles D) genetics
- 7. When alleles of an organism are either both dominant or recessive, this is called
A) recessive B) homozygous C) heterozygous D) dominant
- 8. When one allele masks the presence of another allele, the 1st allele is said to be
A) recessive B) homozygous C) dominant D) heterozygous
- 9. When the alleles for a trait that are present in an organism are not the same
A) genetic B) heredity C) heterozygous D) homozygous
- 10. In cattle, black coat color is dominant over white. If a heterozygous black-coated cow is mated with a white-coated bull, how many different phenotypes with respect to coat color could be expected in the offspring?
A) 2 B) 1 C) 3 D) 4
- 11. What is the the genetic makeup of a tall plant that is homozygous dominant.
T = tall t = short
A) TT B) Tt C) tt
- 12. A mother has the ability to roll her tongue and a genetic makeup of Tt and a father does not have the ability to roll his tongue and is pure recessive, so his genetic makeup is tt. Predict the percent probability of having a child with a who can roll his/her tongue.
A) 100% B) 25% C) 50% D) 75%
- 13. The different forms of a gene for any given trait
A) genetic make up B) homozygous C) alleles D) heterozygous
- 14. It is proper to put the ____ allele on the top of the Punnett Square
A) paternal B) maternal
- 15. For an offspring to _____ a recessive trait, both parents must have at least one ______ allele in their genotype
A) dominate, dominant B) control, recessive C) express, recessive
- 16. In this image, what are the genotypes of the male and of the female parents
A) bb, Bb B) Bb, Bb C) bb, bb D) Bb, bb
- 17. If A stands for astigmatism and a stands for normal vision, what are the phenotype ratios shown in this Punnett Square
A) heterozygous B) 3 astigmatism : 1 normal vision C) homozygous D) 1:2:1 , AA: Aa: aa
- 18. In this image, the genotype of the black parent is ______ and the genotype of the blue parent is
A) heterozygous, heterozygous B) homozygous dominant, homozygous recessive C) homozygous recessive, heterozygous D) heterozygous, homozygous recessive
- 19. In this image, the genotypes of the 4 offspring are
A) FF and ff B) FF, Ff, ff C) all are ff D) all are Ff
- 20. The name of the person who pioneered genetics in the 19th century
A) Reginald Punnett B) Charles Darwin C) Gregor Mendel D) Isaac Newton
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