Question

directions: select each correct answer. more than one answer may be correct. which of the following events can result in an offspring with unique heritable characteristics? recombination of existing genes during sexual reproduction mutations of genes in an organisms sex cells replication of existing genes during asexual reproduction mutations of genes in an organisms body cells

Explanation:

• 有性生殖时基因重组（recombination of existing genes during sexual reproduction）会使后代获得独特可遗传特征，因为来自父母双方基因重新组合。
• 生物体性细胞（sex cells）基因突变（mutations of genes in an organism's sex cells），突变基因会通过生殖细胞遗传给后代，使后代有独特可遗传特征。
• 无性生殖基因复制（replication of existing genes during asexual reproduction），后代基因与亲代基本相同，不会产生独特可遗传特征。
• 生物体体细胞（body cells）基因突变（mutations of genes in an organism's body cells），一般不会遗传给后代，不影响后代可遗传特征。

Answer:

recombination of existing genes during sexual reproduction，mutations of genes in an organism's sex cells