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Chapter 9

PBSC GENES and INHERITANCE - Part 2 BSC1005 259323 CONCEPTS IN BIOLOGY

QuestionAnswer
Cross AaBb x AaBb; what ratio (?/16) will show BOTH dominant phenotypes? 9/16
Cross AaBb x AaBb; what ratio (?/16) will show BOTH recessive phenotypes? 1/16
Cross AAbb x AAbb; What % of the offspring will display both dominant phenotypes? zero
Cross AaBb x AaBb; what ratio (?/16) will show a combination of dominant AND recessive phenotypes? 3/16
Cross AABB x aabb; what % of the offspring will show BOTH dominant phenotypes? 100%
Blood typing is an example of which genetic relationship between genotype and phenotype? Multiple Allelism
Cross AABB x AaBb; What % of the offspring will display both dominant phenotypes? 100%
Chickens which have both black and white feathers are an example of which genetic relationship between genotype and phenotype? Codominance
Sickle Cell Anemia is an example of which genetic relationship between genotype and phenotype? Pleitotropy
This law states that genes located on non-homologous chromosomes will randomly be inherited into gametes. Law of Independent Assortment
Cross AABB x aaBB; What % of the offspring will display both dominant phenotypes? 100%
Cross AABB x aabb; what % of the offspring will show both of the recessive phenotypes? Zero
Height and eye color in humans are an example of which genetic relationship between genotype and phenotype? Polygenic traits (multigenic)
Cross AABB x aaBB; What % of the offspring will display both recessive phenotypes? zero
Pink flowers (from parents that are white and red) are an example of which genetic relationship between genotype and phenotype? Incomplete Dominance