第 3 單元，第 1 課
Inheritance遺傳
點卡片翻面。
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- trait特徵Dimples are an inherited trait.
- phenotype表現型Purple flowers are a phenotype.
- heredity遺傳Heredity explains why you have your mother’s eyes.
- genetics遺傳學Mendel is called the father of genetics.
- dominant trait顯性特徵Purple is the dominant trait for pea flower color.
- recessive trait隱性特徵White pea flowers are a recessive trait.
- chromosome染色體Humans have 23 pairs of chromosomes.
- gene基因A gene controls seed shape in peas.
- allele對偶基因R and r are alleles for seed shape.
- genotype基因型The genotype Rr gives round seeds.
- homozygous同型合子RR and rr are homozygous genotypes.
- heterozygous異型合子A plant with genotype Yy is heterozygous.
- Punnett square棋盤方格（龐尼特方格）The Punnett square showed a 3 : 1 ratio.
- pedigree系譜圖The pedigree showed attached earlobes in three generations.
這課的重點字
- trait特徵
- phenotype表現型
- heredity遺傳
- genetics遺傳學
- dominant trait顯性特徵
- recessive trait隱性特徵
- chromosome染色體
- gene基因