SBI3U Exam Review questions and
answers graded A+
Haploid - correct answer ✔✔Half genetic info
Diploid - correct answer ✔✔All genetic info
Mitosis - correct answer ✔✔division of somatic cells
Meiosis - correct answer ✔✔Cell division of sex cells
Autosomes - correct answer ✔✔First 22 pairs of chromosomes
Sex chromosomes - correct answer ✔✔23rd pair
inversion mutation - correct answer ✔✔Portion of genetic code is chopped out and flipped
Translocation - correct answer ✔✔Where a segment of one chromosome becomes attached to
a different chromosome
Somatic cell - correct answer ✔✔a plant or animal cell that forms the body of the organism;
excludes reproductive cells
Allele - correct answer ✔✔different forms of the same gene
,Homologous - correct answer ✔✔having the same or a similar relation; corresponding, as in
relative position or structure.
Genetic continuity - correct answer ✔✔The resulting two daughter cells have the same number
and types of genes as original cell
Tetrad - correct answer ✔✔A group or set of four
Fertile - correct answer ✔✔Able to conceive young or produce offspring
Viable - correct answer ✔✔Capable of surviving or living successfully
Co-dominance - correct answer ✔✔Red cow with roan bull example, both alleles expressed, no
blending
incomplete dominance - correct answer ✔✔Red and white snap dragon, blends to form pink
snap dragon example, Situation in which one allele is not completely dominant over another
allele
Epigenetics - correct answer ✔✔the study of environmental influences on gene expression that
occur without a DNA change
Genomics - correct answer ✔✔Study of genomes and interactions of genes resulting in
phenotypes
Bioinformatics - correct answer ✔✔Field of study dealing with computer tech to analyze biology
data info.
Sex linked trait - correct answer ✔✔Trait controlled by genes on the Xbox or y chromosomes
, crossing over - correct answer ✔✔Exchange of DNA/parts between a pair of homlogous
chromosomes.
What occurs in prophase 1 of meiosis? - correct answer ✔✔crossing over
What occurs in metaphase 1 of meiosis? - correct answer ✔✔independent assortment
independent assortment - correct answer ✔✔Random alignment of maternal/paternal
chromosomes along metaphase plate
Gene - correct answer ✔✔a section on a chromosome that has genetic information for one trait
cell cycle - correct answer ✔✔process of cellular reproduction, occurring in three main stages -
interphase (growth), mitosis (nuclear division), and cytokinesis (cytoplasm division)
Punnet Square Method - correct answer ✔✔a method of predicting the genotypes and
phenotypes of offspring in genetic crosses
Pedigree - correct answer ✔✔A diagram that shows the occurrence of a genetic trait in several
generations of a family.
transgenic organism - correct answer ✔✔organism that is genetically engineered by inserting a
gene from another organism
Heterozygous - correct answer ✔✔An organism that has two different alleles for a trait
Homozygous - correct answer ✔✔An organism that has two identical alleles for a trait
answers graded A+
Haploid - correct answer ✔✔Half genetic info
Diploid - correct answer ✔✔All genetic info
Mitosis - correct answer ✔✔division of somatic cells
Meiosis - correct answer ✔✔Cell division of sex cells
Autosomes - correct answer ✔✔First 22 pairs of chromosomes
Sex chromosomes - correct answer ✔✔23rd pair
inversion mutation - correct answer ✔✔Portion of genetic code is chopped out and flipped
Translocation - correct answer ✔✔Where a segment of one chromosome becomes attached to
a different chromosome
Somatic cell - correct answer ✔✔a plant or animal cell that forms the body of the organism;
excludes reproductive cells
Allele - correct answer ✔✔different forms of the same gene
,Homologous - correct answer ✔✔having the same or a similar relation; corresponding, as in
relative position or structure.
Genetic continuity - correct answer ✔✔The resulting two daughter cells have the same number
and types of genes as original cell
Tetrad - correct answer ✔✔A group or set of four
Fertile - correct answer ✔✔Able to conceive young or produce offspring
Viable - correct answer ✔✔Capable of surviving or living successfully
Co-dominance - correct answer ✔✔Red cow with roan bull example, both alleles expressed, no
blending
incomplete dominance - correct answer ✔✔Red and white snap dragon, blends to form pink
snap dragon example, Situation in which one allele is not completely dominant over another
allele
Epigenetics - correct answer ✔✔the study of environmental influences on gene expression that
occur without a DNA change
Genomics - correct answer ✔✔Study of genomes and interactions of genes resulting in
phenotypes
Bioinformatics - correct answer ✔✔Field of study dealing with computer tech to analyze biology
data info.
Sex linked trait - correct answer ✔✔Trait controlled by genes on the Xbox or y chromosomes
, crossing over - correct answer ✔✔Exchange of DNA/parts between a pair of homlogous
chromosomes.
What occurs in prophase 1 of meiosis? - correct answer ✔✔crossing over
What occurs in metaphase 1 of meiosis? - correct answer ✔✔independent assortment
independent assortment - correct answer ✔✔Random alignment of maternal/paternal
chromosomes along metaphase plate
Gene - correct answer ✔✔a section on a chromosome that has genetic information for one trait
cell cycle - correct answer ✔✔process of cellular reproduction, occurring in three main stages -
interphase (growth), mitosis (nuclear division), and cytokinesis (cytoplasm division)
Punnet Square Method - correct answer ✔✔a method of predicting the genotypes and
phenotypes of offspring in genetic crosses
Pedigree - correct answer ✔✔A diagram that shows the occurrence of a genetic trait in several
generations of a family.
transgenic organism - correct answer ✔✔organism that is genetically engineered by inserting a
gene from another organism
Heterozygous - correct answer ✔✔An organism that has two different alleles for a trait
Homozygous - correct answer ✔✔An organism that has two identical alleles for a trait
