物种的变异
Variation in Species
解释物种内部和物种之间的变异，区分连续变异（如身高）和不连续变异（如血型），并区分遗传原因和环境原因。
Explain variation within and between species, distinguishing between continuous variation (e.g. height) and discontinuous variation (e.g. blood group), and between genetic and environmental causes
学习证据 / Evidence
- 举出人类连续变异和不连续变异的例子
- 区分变异的遗传原因（可遗传的差异）与环境原因（饮食、日照等）
- 解释为什么有性生殖比无性生殖产生更大的变异
- 绘制或解读显示连续变异的频数图
- Gives examples of continuous and discontinuous variation in humans
- Distinguishes between genetic causes of variation (inherited differences) and environmental causes (diet, sunlight, etc.)
- Explains why sexual reproduction produces greater variation than asexual reproduction
- Draws or interprets a frequency graph showing continuous variation
评估问题 / Assessment
如果{{name}}环顾教室，发现每个人的身高、发色和眼色都略有不同，能否解释为什么会有这些差异——哪些来自遗传、哪些受环境影响、哪些两者都有？
If {{name}} looked around a classroom and noticed that everyone has slightly different heights, hair colours, and eye colours, could they explain why these differences exist — and which ones are inherited, which are down to the environment, and which are both?