Chapter 15

Question 1

Heritable feature of an organism that varies among individuals(freckles present)

Answer 1

Character

Question 2

Variety or state of a character, such as a white flower or no freckles

Answer 2

Trait

Question 3

Functional unit of heredity

Nucleotide sequence determines the primary structure of all polypeptides and proteins

Answer 3

Structural gene

Question 4

Alternative form of a gene which occurs at the same location on the homologous chromosomes

Answer 4

Allele

Question 5

Actual alleles present for a given gene on homologous chromosomes

Expressed with letters

Answer 5

Genotype

Question 6

Outward expression of a genotype or what the trait actually looks like

Answer 6

Phenotype

Question 7

Genotype with the same alleles

Answer 7

Homozygous

Question 8

Genotype with different alleles

Answer 8

Heterozygous

Question 9

Allele expressed in a phenotype when a genotype is heterozygous

Answer 9

Dominant allele

Question 10

Allele not expressed in the phenotype when genotype is heterozygous

Answer 10

Recessive allele

Question 11

Genetic condition which occurs when neither allele is dominant over the other but are expressed

Answer 11

Co dominant

Question 12

Ancestral line

Answer 12

Pedigree