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B1 中级 英语 3:07 Educational

How Mendel's pea plants helped us understand genetics - Hortensia Jiménez Díaz

TED-Ed · 4,826,223 次观看 · 添加于 2 个月前

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B1

CEFR 等级

5/10

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字幕 (70 片段)

00:00

Translator: Andrea McDonough Reviewer: Bedirhan Cinar

00:14

These days scientists know

00:16

how you inherit characteristics from your parents.

00:18

They're able to calculate probabilities of having a specific trait

00:21

or getting a genetic disease

00:23

according to the information from the parents and the family history.

00:26

But how is this possible?

00:27

To understand how traits pass from one living being to its descendants,

00:31

we need to go back in time to the 19th century

00:33

and a man named Gregor Mendel.

00:35

Mendel was an Austrian monk and biologist

00:37

who loved to work with plants.

00:39

By breeding the pea plants he was growing in the monastery's garden,

00:42

he discovered the principles that rule heredity.

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