- 1. Traits are characteristics that can only be passed from a (n) ____________ thing to its _____________
A) single celled, nucleus B) living, offspring C) living, ancestors D) asexual, organs
- 2. The process by which traits are passed from parents to offspring is called
A) dominance B) meiosis C) recessive genes D) heredity
- 3. For each trait, there are __________ allele possibilities
A) unlimited B) 2 C) 1 D) 4 gamete
- 4. Genetic make up of an organism
A) alleles B) genotype C) genotypic D) phenotype
- 5. The physical trait that is expressed in an individual
A) heterozygous B) phenotype C) homozygous D) genotype
A) traits B) genetics C) alleles D) Punnett Square
- 7. When alleles of an organism are either both dominant or recessive, this is called
A) homozygous B) dominant C) recessive D) heterozygous
- 8. When one allele masks the presence of another allele, the 1st allele is said to be
A) homozygous B) heterozygous C) dominant D) recessive
- 9. When the alleles for a trait that are present in an organism are not the same
A) homozygous B) heterozygous C) genetic D) heredity
- 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) 1 B) 4 C) 2 D) 3
- 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) heterozygous B) alleles C) genetic make up D) homozygous
- 14. It is proper to put the ____ allele on the top of the Punnett Square
A) maternal B) paternal
- 15. For an offspring to _____ a recessive trait, both parents must have at least one ______ allele in their genotype
A) express, recessive B) dominate, dominant C) control, 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) 3 astigmatism : 1 normal vision B) homozygous C) heterozygous 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 recessive, heterozygous C) heterozygous, homozygous recessive D) homozygous dominant, homozygous recessive
- 19. In this image, the genotypes of the 4 offspring are
A) all are ff B) all are Ff C) FF and ff D) FF, Ff, ff
- 20. The name of the person who pioneered genetics in the 19th century
A) Reginald Punnett B) Isaac Newton C) Charles Darwin D) Gregor Mendel
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