Heredity

Question 1

Heredity

Answer 1

transfer of genetically determined characteristics from one generation to the next

Question 2

Genetics

Answer 2

study of inheritance

Question 3

What do 23 chromosome pairs have

Answer 3

22 homologous pairs autosomal
somatic characteristics

1 pair sex chromosomes
Male = XY (not homologous)
Female = XX (homologous)

Question 4

Alleles

Answer 4

genes occupying the same (trait) locus on homologous chromosomes

may be homozygous or heterozygous

Question 5

Homozygous

Answer 5

same allele of a particular gene on homologous chromosomes

Question 6

Heterozygous

Answer 6

different alleles of same gene

Question 7

Genotype

Answer 7

Catalogue of a persons genes (genetic makeup)

e.g Bb

Question 8

Phenotype

Answer 8

expression of genotype (genes) to give observable characteristics

e.g black hair

Question 9

Dominant Allele

Answer 9

expressed in the phenotype regardless of other allele

BB or Bb: dominant allele expressed e.g black hair

Question 10

Recessive Allele

Answer 10

expressed in phenotype only if present on both alleles

bb e.g blond hair