BIO 1201 GREGG EXAM 3 2026
CERTIFICATION EVALUATION EXAMS
COMPLETE QUESTIONS AND ANSWERS
◉ how do different alleles occur
Answer: through mutation
◉ what 3 things contribute to genetic variation
Answer: crossing over, independent assortment, random
fertilization
◉ when does independent assortment occur?
Answer: metaphase I of meiosis
◉ random fertilization
Answer: any sperm can fertilize any egg
◉ the mating of 2 true-breeding varieties
Answer: hybridization
◉ p generation
,Answer: true-breeding parents
◉ f1 generation
Answer: hybrid offspring of the P generation
◉ f2 generation
Answer: offspring of the F1 generation
◉ alternative versions of a gene
Answer: alleles
◉ the specific spot where a gene resides on a chromosome
Answer: locus
◉ two alleles for a heritable character separate during gamete
formation and end up in different gametes
Answer: law of segregation
◉ organism with two identical alleles for a character
Answer: homozygote
◉ organism with two different alleles for a gene
, Answer: heterozygote
◉ to determine the genotype, breed the mystery individual with a
homozygous recessive individual
Answer: testcross
◉ crossing two true-breeding parents differing in two characters
produces ______ in the F1 generation, heterozygous for both
characters
Answer: dihybrids
◉ a cross between F1 which can determine whether two characters
are transmitted to offspring as a package or independently is called?
Answer: a dihybrid cross
◉ law of independent assortment
Answer: each pair of alleles segregates independently of any other
pair of alleles during gamete formation
◉ do genes located near each other on the same chromosome tend
to be inherited together?
Answer: yes
CERTIFICATION EVALUATION EXAMS
COMPLETE QUESTIONS AND ANSWERS
◉ how do different alleles occur
Answer: through mutation
◉ what 3 things contribute to genetic variation
Answer: crossing over, independent assortment, random
fertilization
◉ when does independent assortment occur?
Answer: metaphase I of meiosis
◉ random fertilization
Answer: any sperm can fertilize any egg
◉ the mating of 2 true-breeding varieties
Answer: hybridization
◉ p generation
,Answer: true-breeding parents
◉ f1 generation
Answer: hybrid offspring of the P generation
◉ f2 generation
Answer: offspring of the F1 generation
◉ alternative versions of a gene
Answer: alleles
◉ the specific spot where a gene resides on a chromosome
Answer: locus
◉ two alleles for a heritable character separate during gamete
formation and end up in different gametes
Answer: law of segregation
◉ organism with two identical alleles for a character
Answer: homozygote
◉ organism with two different alleles for a gene
, Answer: heterozygote
◉ to determine the genotype, breed the mystery individual with a
homozygous recessive individual
Answer: testcross
◉ crossing two true-breeding parents differing in two characters
produces ______ in the F1 generation, heterozygous for both
characters
Answer: dihybrids
◉ a cross between F1 which can determine whether two characters
are transmitted to offspring as a package or independently is called?
Answer: a dihybrid cross
◉ law of independent assortment
Answer: each pair of alleles segregates independently of any other
pair of alleles during gamete formation
◉ do genes located near each other on the same chromosome tend
to be inherited together?
Answer: yes
