UIUC IB 150 COMPREHENSIVE SCRIPT 2026
QUESTIONS AND SOLUTIONS
◉ Or-rule of probability. Answer: if more than one way to achieve a
combination of events and the order is not important p(A) + p(B) =
p(A and B)
◉ parental type. Answer: among products of a cross, those progeny
that possess phenotype of at least one parent
◉ parthenogenesis. Answer: reproduction from the ovum without
fertilization (invertebrates)
◉ pedigree. Answer: record of descent/ancestry
◉ phenotype. Answer: observable characteristics determined by
genotype
◉ ploidy. Answer: number of set of chromosomes in a cell
◉ polar bodies. Answer: each of the small cell that buds off from an
oocyte
, ◉ polygenic traits. Answer: controlled by 2+ genes at different loci
on different chromosomes
◉ polypeptide. Answer: polymere consisting of a large number of
amino acids bonded together
◉ polyploid. Answer: containing 2+ homologous sets of
chromosomes
◉ protein. Answer: compound of amino acids
◉ Punnett Square. Answer: diagram used to predict an outcome of a
cross
◉ p-value. Answer: level of significance within a hypothesis test
representing probability
◉ recessive allele. Answer: allele that can be dominated over
◉ recombinant frequency. Answer: measure of genetic linkage
◉ recombinant type. Answer: genotype not the same as parentals
QUESTIONS AND SOLUTIONS
◉ Or-rule of probability. Answer: if more than one way to achieve a
combination of events and the order is not important p(A) + p(B) =
p(A and B)
◉ parental type. Answer: among products of a cross, those progeny
that possess phenotype of at least one parent
◉ parthenogenesis. Answer: reproduction from the ovum without
fertilization (invertebrates)
◉ pedigree. Answer: record of descent/ancestry
◉ phenotype. Answer: observable characteristics determined by
genotype
◉ ploidy. Answer: number of set of chromosomes in a cell
◉ polar bodies. Answer: each of the small cell that buds off from an
oocyte
, ◉ polygenic traits. Answer: controlled by 2+ genes at different loci
on different chromosomes
◉ polypeptide. Answer: polymere consisting of a large number of
amino acids bonded together
◉ polyploid. Answer: containing 2+ homologous sets of
chromosomes
◉ protein. Answer: compound of amino acids
◉ Punnett Square. Answer: diagram used to predict an outcome of a
cross
◉ p-value. Answer: level of significance within a hypothesis test
representing probability
◉ recessive allele. Answer: allele that can be dominated over
◉ recombinant frequency. Answer: measure of genetic linkage
◉ recombinant type. Answer: genotype not the same as parentals
