Biology 1402 Exam 2 Questions &
Answers (Grade A+)
Pure-breeding strain -
correct answer ✅crosses between identical homozygotes
monohybrid cross -
correct answer ✅3:1 ratio (1st law)
A cross between heterozygotes including only one trait at a time
Homozygote -
correct answer ✅organism that inherits two alleles of the same
type for a given gene
-Same two alleles
Heterozygous -
correct answer ✅having two different alleles for a trait
testcross -
correct answer ✅way of determining genotype of the unknown
parent
Punnett Square -
correct answer ✅A chart that shows all the possible combinations
of alleles that can result from a genetic cross
,Biology 1402 Exam 2 Questions &
Answers (Grade A+)
=allele segregation - sorting
Mendel's 1st Law -
correct answer ✅allele segregation
3:1 ratio
Mendels 2nd law -
correct answer ✅9:3:3:1 ratio
-independent assortment of alleles on a different chromosome
during meiosis
Criss-cross Inheritance -
correct answer ✅Sons inherit their x chromosome from mom
-How sex linked (x- c'sones) genes are passed from mom to son.
Epistasis -
correct answer ✅One gene surpasses or "dominates" a different
gene, rather than an allele
Epistasis -
correct answer ✅Labrador retrievers: coat color
, Biology 1402 Exam 2 Questions &
Answers (Grade A+)
Codominance -
correct answer ✅Heterozygote expresses both traits (alleles)
Codominance -
correct answer ✅Blood types (A, B, AB, O)
Polygenic Traits -
correct answer ✅One trait is caused by many genes
Polygenetic traits -
correct answer ✅Human skin color: determined by 4 genes
heredity -
correct answer ✅inheritance from one generation to another
blending theory -
correct answer ✅the theory that the younger generation will have
a perfect mix of the older generation; believed to be true until
Mendel changed it
Answers (Grade A+)
Pure-breeding strain -
correct answer ✅crosses between identical homozygotes
monohybrid cross -
correct answer ✅3:1 ratio (1st law)
A cross between heterozygotes including only one trait at a time
Homozygote -
correct answer ✅organism that inherits two alleles of the same
type for a given gene
-Same two alleles
Heterozygous -
correct answer ✅having two different alleles for a trait
testcross -
correct answer ✅way of determining genotype of the unknown
parent
Punnett Square -
correct answer ✅A chart that shows all the possible combinations
of alleles that can result from a genetic cross
,Biology 1402 Exam 2 Questions &
Answers (Grade A+)
=allele segregation - sorting
Mendel's 1st Law -
correct answer ✅allele segregation
3:1 ratio
Mendels 2nd law -
correct answer ✅9:3:3:1 ratio
-independent assortment of alleles on a different chromosome
during meiosis
Criss-cross Inheritance -
correct answer ✅Sons inherit their x chromosome from mom
-How sex linked (x- c'sones) genes are passed from mom to son.
Epistasis -
correct answer ✅One gene surpasses or "dominates" a different
gene, rather than an allele
Epistasis -
correct answer ✅Labrador retrievers: coat color
, Biology 1402 Exam 2 Questions &
Answers (Grade A+)
Codominance -
correct answer ✅Heterozygote expresses both traits (alleles)
Codominance -
correct answer ✅Blood types (A, B, AB, O)
Polygenic Traits -
correct answer ✅One trait is caused by many genes
Polygenetic traits -
correct answer ✅Human skin color: determined by 4 genes
heredity -
correct answer ✅inheritance from one generation to another
blending theory -
correct answer ✅the theory that the younger generation will have
a perfect mix of the older generation; believed to be true until
Mendel changed it
