Genetic Lineage (Grade 12 NSC Matric Life Sciences): Flashcards
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Alternative name for pedigree diagram
Alternative name for pedigree diagram
Family tree
Symbol for males in pedigree diagrams
Symbol for males in pedigree diagrams
Squares
Symbol for females in pedigree diagrams
Symbol for females in pedigree diagrams
Circles
Meaning of filled/shaded symbols
Meaning of filled/shaded symbols
Individuals who express the trait being studied
Meaning of half-filled symbols
Meaning of half-filled symbols
Carriers of recessive traits
Key feature of autosomal dominant inheritance
Key feature of autosomal dominant inheritance
Trait appears in every generation
Key feature of autosomal recessive inheritance
Key feature of autosomal recessive inheritance
Trait often skips generations
Chromosome location of sex-linked traits
Chromosome location of sex-linked traits
X chromosome
Why sex-linked traits more common in males
Why sex-linked traits more common in males
Males need only one copy to express trait
Genotype of individual showing recessive trait
Genotype of individual showing recessive trait
Homozygous recessive (two recessive alleles)