シャドーイング練習: Genetics Chapter 1 | Introduction to Genes, DNA, Mendel & Modern Genetics - YouTubeで英語スピーキングを学ぶ
C1
シャドーイング コントロール
0% 完了 (0/59 文)
Welcome to another lecture by Medical Medics, learning made easy.
⏸ 一時停止中
再生速度:
リピート回数:
待機モード:
字幕同期:0ms
すべての文
59 文
1
Welcome to another lecture by Medical Medics, learning made easy.
2
Genetics, Chapter 1, Introduction to Genetics.
3
In this lecture we will discuss what is genetics, briefly touch upon the history of genetics, the discovery of DNA, why genetics is important in medicine, some key concepts, and end with a summary.
4
Now, genetics is the science of heredity and variation in living organisms.
5
Focus areas include genes, which are the units of heredity, DNA, the blueprint of life, and chromosomes, these carry the genetic material.
6
Why is this relevant?
7
Because it explains biological diversity, and it links traits to their hereditary origins.
8
So an example of this is, why do some people have curly hair while others don't?
9
That's an example of genetics at work.
10
Now, before modern science, people thought that traits blended together like mixing colors.
11
But it wasn't until the discovery of cells where we got our first clues to start understanding heredity correctly.
12
correctly.
13
Because, for example, the blending inheritance theory couldn't explain trait reappearance.
14
And pangenesis was the idea that small particles from the body would transfer traits to our offspring.
15
And it implied that acquired traits could be inherited.
16
And this was later disproven.
17
Only after the discovery of cells, with the technological advancements of microscopy and when we get to Gregor Mendel,
18
who is called the father of genetics, did we start understanding heredity.
19
So, Gregor Mendel, called the father of genetics, what he did was he experimented with pea plants, and he observed patterns of inheritance in traits, for example, tall versus short plants.
20
And that led him to formulate two laws.
21
First, the law of segregation.
22
So, each parent passes one copy of a gene.
23
He also formulated the law of independent assortment, so traits are inherited independently.
24
So, for example, tall plants crossed with short plants produce tall offspring, but short plants can appear in the next generation.
25
So, following from Mendel's discoveries, we found that traits actually don't blend like they thought before.
26
Instead, they are passed down like in patterns, and it's like flipping a coin.
27
And then, of course, with the discovery of DNA, everything accelerated.
28
Now, Friedrich in 1869 discovered the nucleon, later known as DNA.
29
and he did that in white blood cells.
30
In 1952, the Hershey Chase experiment proved DNA, not proteins, is the genetic material using viruses and radioactive labeling.
31
Further on, 1953, Watson, Crick, and Franklin used x-ray diffraction to describe the DNA double helix structure.
32
And the structure of DNA, though, therefore, as we know it now, is a double helix, so a spiral staircase, and you can see it illustrated here.
33
And it is made of sugar, phosphate, and nitrogen bases.
34
And then you find A, T, C, G pairings, where you have adenine, thymine, cytosine, and guanine.
35
So DNA is like a twisted ladder made of molecules.
36
It carries the instructions for how your body grows and works.
37
And further, moving into modern genetics, we've had the Human Genome Project that went on from 1990 to 2003, where we mapped all human genes.
38
And this means that, similar to creating a GPS for the human body, it helps us to develop better treatments for diseases.
39
and of course it enabled breakthroughs in medicine and technology.
40
Some of these technologies could be CRISPR, which is a gene editing tool.
41
So an example is we use gene therapy for conditions like muscular dystrophy, where modern genetic tools are used.
42
And this gene therapy is becoming more and more and more popular now.
43
So why genetics is important in medicine?
44
Because first of all, diagnostics.
45
It helps us identifying genetic causes of diseases for example sickle cell anemia
46
personalized medicine so tailoring treatments based on dna for example
47
targeted cancer therapy preventive measures so predicting disease risk like brca mutations for breast cancer.
48
Now some key concepts in genetics include the gene, which is the unit of heredity, and it codes for proteins.
49
Then we have chromosomes, these structure organizing DNA in cells, and we have 23 pairs in humans, and in total, 46.
50
Mutations, so change in DNA sequence that can affect health.
51
An example is a mutation in the hemoglobin gene leading to sickle cell disease.
52
So a way to think about it is that genes are like instructions,
53
chromosomes are the books that hold these instructions, and mutations are typos in those instructions.
54
So in summary then, genetics studies how traits and diseases are inherited.
55
It's crucial in medicine, agriculture, and technology.
56
Historical milestones include Mendel's laws and the discovery of DNA.
57
And modern genetics drives personalized medicine and new treatments.
58
That's the end of the first chapter.
59
Continue now to chapter 2.
App StoreとGoogle Playで4.9/5
Shadowing English
モバイル版
Shadowing Englishアプリでいつでもどこでも英語を学びましょう。 今すぐコミュニケーションスキルを向上させましょう！
学習の進捗を追跡する
AIによる採点とエラー修正
豊富な動画ライブラリ
文脈と背景
このビデオでは、遺伝学の基本について、遺伝の歴史やDNAの発見、現代医学における遺伝学の重要性について解説されています。遺伝学は、生物の遺伝と変異に関する科学であり、特に遺伝子やDNA、染色体に焦点をあてています。遺伝学を学ぶことで、生物の多様性や特性がどのように遺伝されるのかを理解することができ、医療分野でもこの知識が活用されています。遺伝学の父とされるグレゴール・メンデルの実験を通じて、遺伝の法則が発見され、DNA構造の解明が医学の進歩に寄与しています。
日常会話のためのトップ5フレーズ
- 遺伝学は生物の遺伝と変異についての科学です。
- DNAは生命の設計図です。
- メンデルは遺伝の法則を発見しました。
- 現代の遺伝学は医療に大きな影響を与えています。
- 遺伝子治療が人気を集めています。
ステップ・バイ・ステップ シャドーイングガイド
このビデオを通じて、英語を使った遺伝学の科学的な内容を理解し、発音や表現を向上させるためのシャドーイングを行いましょう。以下は、動画の内容を効果的に学ぶためのガイドです。
- まず、YouTubeで英語学習をしながら、ビデオを視聴し、全体の流れを把握します。
- 次に、重要なフレーズをメモし、それらを声に出して繰り返すことで、英語スピーキング練習を行います。
- シャドースピーチに挑戦しましょう。ビデオの各セクションを一時停止し、スピーカーの後について話してみてください。
- ビデオを聞き取る際、難しい部分は慢性Actionで何度も再生し、リズムやイントネーションを意識します。
- 最後に、友達と一緒に実践し、shadowspeaksを利用してフィードバックをもらいましょう。
このようなシャドーイングサイトを利用することで、さらに効果的に言語能力を向上させることができます。ぜひ繰り返し練習し、自信を持ってスピーキングを楽しんでください。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。