Mendelian and non-Mendelian inheritance

Question 1

Genes

Answer 1

Segments of DNA

Question 2

Allele

Answer 2

1 or 2 or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
-Often recognized by letter “F” “f”

Question 3

Genotype

Answer 3

2 alleles present at a specific locus in the genome. Refers to entire genetic makeup of an individual
-Ex. “Ff”- heterozygous; “FfDd”

Question 5

Phenotype

Answer 5

individual’s observable traits produced by the interaction of the genotype
-Ex. Height, eye color, and blood type

Question 6

Dihybrid cross

Answer 6

cross between 2 individuals for 2 observed traits that are controlled by 2 distinct traits
-Ex. “FfDd”
-“Traits are inherited independently one another, indicating no genetic link between 2 traits”
-FOIL- First, Outside, Inside, Last
-Ex. “FfDd”
1) FD
2) Fd
3) fD
4) fd

Question 7

Non-Mendelian inheritance: incomplete dominance

Answer 7

-Form of a gene interaction in which both alleles of a gene at a locus are partial expressed
-“RR”- red rose, “rr”- white rose, “Rr”- pink rose

Question 8

Non-Mendelian inheritance: codominance

Answer 8

a type of inheritance in which 2 versions (alleles) of the same gene are expressed to yield difference traits in an individual
-Ex. “Bw”- white w/ black feathers- both traits expressed w/o saturation
-Both alleles contribute to phenotype in a visible manner