水獭
发表于 2025-3-23 11:26:02
第4楼
现晕光
发表于 2025-3-23 16:09:00
第4楼
要求比…更好
发表于 2025-3-23 18:50:32
第4楼
继而发生
发表于 2025-3-24 01:21:24
5楼
错
发表于 2025-3-24 04:13:42
5楼
MANIA
发表于 2025-3-24 08:26:51
5楼
有抱负者
发表于 2025-3-24 13:26:06
6楼
Amylase
发表于 2025-3-24 16:26:19
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公理
发表于 2025-3-24 20:09:49
6楼
EXPEL
发表于 2025-3-25 03:07:12
organisms are diploids (2n) since their somatic cells have a chromosome complement consisting of two homologous sets. A few species, however, naturally have only one set of chromosomes, and they are called haploid or monoploid (1n). Gametes generated in diploid organisms by meiosis and gametogenesis