第二章孟得尔式遗传分析 有关名词概念 I alleles 2 homozygote 3 heterozygote 4 true breeding 5 genotype 6 phenotype 7 testcross 8 backcross 9 phenocopy 10 expressivity 1l penetrance 12 reaction norm
第二章 孟得尔式遗传分析 一有关名词概念 1 alleles 2 homozygote 3 heterozygote 4 true breeding 5 genotype 6 phenotype 7 testcross 8 backcross 9 phenocopy 10 expressivty 11 penetrance 12 reaction norm
孟得尔定律的普遍性 1动、植物遗传 随
二 孟得尔定律的普遍性 1 动、植物遗传
RR X rr RR X rr Rr RrⅩrr IRR 2 Rr rr 1 Rr Irr
RR X rr RR X rr Rr Rr X rr 1RR 2 Rr 1 rr 1 Rr 1 rr
Gene Biochemical Change of Unbranched Starch Molecules Pea shape Dominant Active allele R enzyme Conversion ③○ Unbranched starch Branched starch Round pea Recessive Inactive allele r enzyme conversion Unbranched starch Unbranched starch Wrinkled pea Figure Round and wrinkled peas: How one gene determines an enzyme that affects pea shape. The R allele of the pea shape gene directs the synthesis of an enzyme that converts unbranched starch to branched starch, indirectly leading to round pea shape. The r allele of this gene determines an inactive form of the enzyme, leading to a buildup of linear starch that ultimately causes seed wrinkling
2人类遗传 遗传方式:显性遗传隐性遗传 基因所在染色体:常染色体遗传性染色体遗 传 控制性状的基因数目:单基因遗传多基因遗 传 pedigree analysis (1)正常性状 眼睛颜色:棕色十蓝色 用手习惯:右癖+左癖 有耳垂+无耳垂
2 人类遗传 遗传方式 ： 显性遗传 隐性遗传 基因所在染色体：常染色体遗传 性染色体遗 传 控制性状的基因数目：单基因遗传 多基因遗 传 pedigree analysis (1)正常性状 眼睛颜色： 棕色＋ 蓝色－ 用手习惯： 右癖＋ 左癖－ 有耳垂＋ 无耳垂－