Unit 6 “Complex Inheritance” 10 Words

X or Y Chromosome; paired sex chromosomes determine an individual’s gender XX = Girl XY = Boy

Sex Chromosome X or Y Chromosome; paired sex chromosomes determine an individual’s gender XX = Girl XY = Boy

Having 3 chromosomes in a slot when there should be only 2 *Trisomy 21 = Down Syndrome*

Having 3 chromosomes in a slot when there should be only 2 Trisomy Having 3 chromosomes in a slot when there should be only 2 *Trisomy 21 = Down Syndrome*

homozygous parent organisms. Complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the two homozygous parent organisms. *Red Flower + White Flower = pink*

homozygous parent organisms. Incomplete Dominance Complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the two homozygous parent organisms. *Red Flower + White Flower = pink*

Chromosome that is NOT a sex chromosome

Chromosome that is NOT a sex chromosome Autosome Chromosome that is NOT a sex chromosome

Individual heterozygous for a recessive disorder such as cystic fibrosis or Tay-Sachs Disease

Carrier Individual heterozygous for a recessive disorder such as cystic fibrosis or Tay-Sachs Disease

Characteristic, such as red-green color blindness, controlled by genes on the X Chromosome

Sex Linked Characteristic, such as red-green color blindness, controlled by genes on the X Chromosome

Complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed. * Roan Cows *

Codominance Complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed. * Roan Cows *

Cell division in which the sister chromatids do NOT separate correctly, resulting in gametes with an abnormal number of chromosomes

Nondisjunction Cell division in which the sister chromatids do NOT separate correctly, resulting in gametes with an abnormal number of chromosomes

Micrograph in which the pairs of homologous chromosomes are arranged in decreasing size

Karyotype Micrograph in which the pairs of homologous chromosomes are arranged in decreasing size

Diagrammed family history that is used to study inheritance patterns of a trait through several generations and that can be used to predict disorders in future offspring

Pedigree Diagrammed family history that is used to study inheritance patterns of a trait through several generations and that can be used to predict disorders in future offspring

The End