Inheritance and Punnett Squares
CORRECT 100%
Gene - ANSWERA section of piece of DNA that codes for a specific trait.
Alleles - ANSWERThe many "options" of a gene.
Homozygous dominant - ANSWERBoth alleles for a trait are the same and dominant
Examples: AA. BB, ZZ, MM
Homozygous recessive - ANSWERBoth alleles for a trait are the same and recessive
Example: aa, bb, zz, mm
Dominant - ANSWERThe stronger version of a pair of alleles. They show their effect
even if there is only one copy.
Recessive - ANSWERAn allele of a gene that shows its effect only if there are two
copies.
Incomplete dominance - ANSWERAlleles "blend" creating a new trait
Codominance - ANSWERBoth alleles are "seen" in the offspring, show up side by
side
Heterozygous - ANSWEROne allele for a trait is dominant and the other allele is
recessive.
Example: Aa, Bb, Zz, Mm
Genotype - ANSWERThe version of the genes that an organism has. Symbolized by
letters.
Phenotype - ANSWERAn organism's physical appearance or visible traits.
Punnett Square - ANSWERA chart that shows all the possible combinations of
alleles that can result from a genetic cross between two parents.
Sex-linked trait - ANSWERTrait carried on X-chromosome, female with affected X is
carrier, male with affected X "shows" the trait.
Multiple Alleles - ANSWERthree or more forms of a gene that code for a single trait
Ex. Blood Type
Pedigree - ANSWERA diagram that shows the occurrence of a genetic trait in
several generations of a family.
In the ABO system, BO is - ANSWERType B
CORRECT 100%
Gene - ANSWERA section of piece of DNA that codes for a specific trait.
Alleles - ANSWERThe many "options" of a gene.
Homozygous dominant - ANSWERBoth alleles for a trait are the same and dominant
Examples: AA. BB, ZZ, MM
Homozygous recessive - ANSWERBoth alleles for a trait are the same and recessive
Example: aa, bb, zz, mm
Dominant - ANSWERThe stronger version of a pair of alleles. They show their effect
even if there is only one copy.
Recessive - ANSWERAn allele of a gene that shows its effect only if there are two
copies.
Incomplete dominance - ANSWERAlleles "blend" creating a new trait
Codominance - ANSWERBoth alleles are "seen" in the offspring, show up side by
side
Heterozygous - ANSWEROne allele for a trait is dominant and the other allele is
recessive.
Example: Aa, Bb, Zz, Mm
Genotype - ANSWERThe version of the genes that an organism has. Symbolized by
letters.
Phenotype - ANSWERAn organism's physical appearance or visible traits.
Punnett Square - ANSWERA chart that shows all the possible combinations of
alleles that can result from a genetic cross between two parents.
Sex-linked trait - ANSWERTrait carried on X-chromosome, female with affected X is
carrier, male with affected X "shows" the trait.
Multiple Alleles - ANSWERthree or more forms of a gene that code for a single trait
Ex. Blood Type
Pedigree - ANSWERA diagram that shows the occurrence of a genetic trait in
several generations of a family.
In the ABO system, BO is - ANSWERType B
