Genetics Test Review
Know the following:
1. Dominant
2. Recessive
3. Homozygous
4. Heterozygous
5. Purebred
6. Hybrid
7. Genotype
8. Phenotype
9. Gene
10. Allele
11. Punnett Square
12. Test Cross
13. Genotypic ratio
14. Phenotypic ratio
Know how to perform the following crosses (do the punnett squares)
15. Single Factor Cross (including Monohybrid including ratios)
16. Two Factor Cross (including Dihybrid including ratios)
Practice Problems:
1. In bunnies Brown fur color (B) is dominant over white (b). A Heterozygous
Brown bunny and a Homozygous recessive bunny were crossed. What are the
genotypic and phenotypic ratio of the offspring?
2. Spots (T) are dominant to solid (t) in bunnies and Brown fur color (B) is dominant
over white (b). If you cross a BbTt bunny with a bbTt bunny. What is the
phenotypic ratio of the offspring?
3. What would be the genotype of a solid white bunny?
4. How could you determine the genotype of a brown bunny if you did not know
what it was (EXPLAIN FULLY)?
5. In dogs, brown is dominant to white. How can the phenotype of a brown dog be
determined?