# Resimli Soru 05-02-2026 21:03:37

**URL:** <https://sorumatik.co/t/resimli-soru-05-02-2026-2137/619528>\
**Category:** YKS TYT\
**Created:** [Şubat 5, 2026, 6:03ös UTC](https://sorumatik.co/t/resimli-soru-05-02-2026-2137/619528 "2026-02-05T18:03:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Nilay\_Bekar](https://sorumatik.co/user_avatar/sorumatik.co/nilay_bekar/32/60662_2.png) [@Nilay\_Bekar](https://sorumatik.co/u/Nilay_Bekar)\
**Post date:** [Şubat 5, 2026, 6:03ös UTC](https://sorumatik.co/t/resimli-soru-05-02-2026-2137/619528/1 "2026-02-05T18:03:46Z")

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![image](https://sorumatik.co/uploads/default/original/3X/5/5/55383cc9f4cebc2b37fae4129f61b712e06b2882.jpeg)

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**Author:** ![Egitim\_Danismani](https://sorumatik.co/user_avatar/sorumatik.co/egitim_danismani/32/86791_2.png) [@Egitim\_Danismani](https://sorumatik.co/u/Egitim_Danismani)\
**Post date:** [Şubat 5, 2026, 6:04ös UTC](https://sorumatik.co/t/resimli-soru-05-02-2026-2137/619528/2 "2026-02-05T18:04:03Z")

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## Reading Comprehension Questions About Fossil Cancer Discovery

### Önemli Noktalar

- Cancer is rarely identified in fossils because cancer affects soft tissues that do not survive millions of years of fossilization.
- Osteosarcoma found in a fossil turtle leg bone represents one of the oldest known cases of cancer in vertebrates.
- The discovery is significant because it shows cancer’s evolutionary roots go back to early amniotes, not just modern humans.

Cancer is rarely detected in fossils because it usually affects **soft tissues** , which are not preserved during the **fossilization** process over millions of years. The fossil discussed is an **osteosarcoma** found in the leg bone of a turtle from about **240 million years ago** , making it the **oldest known cancer case** in vertebrates, highlighting that cancer roots go back far into evolutionary history.

### İçindekiler

1. [Why Cancer is Rare in Fossils](#cancer-fossils-rarity)
2. [What the Fossil Discovery Reveals](#fossil-discovery-significance)
3. [Karşılaştırma Tablosu: Cancer in Fossils vs Modern Cases](#cancer-fossil-vs-modern)
4. [Özet Tablo](#cancer-summary)
5. [Sık Sorulan Sorular](#cancer-fossil-faq)

* * *

## Why Cancer is Rare in Fossils

Cancer typically occurs in **soft tissues** , such as muscles and organs, which generally decay and are not fossilized. Therefore, fossil evidence for cancer is extremely rare. The fossilization process favors **hard tissues** like bones but even then, cancer in bones is uncommon. The fossil osteosarcoma demonstrates an exception where bone cancer was preserved, allowing scientists to study cancer in ancient vertebrates.

> 💡 **Pro Tip:** When considering rarity in paleontology, think about tissue type and fossilization potential. Hard tissues preserve much better than soft tissues.

* * *

## What the Fossil Discovery Reveals

This osteosarcoma discovery is remarkable because it:

- Provides evidence that cancer existed far earlier in evolutionary history than previously confirmed.
- Indicates susceptibility to cancer is inherent in the DNA of vertebrates including turtles, mammals, birds, and reptiles.
- Shows that cancer is not solely a modern human disease but has ancient origins dating back to early amniotes (animals with backbones and eggs).

> ⚠ **Warning:** Misinterpreting this discovery as proof that cancer was common in all ancient species would be incorrect; the fossil is a rare finding that highlights evolutionary cancer roots.

* * *

## Karşılaştırma Tablosu: Cancer in Fossils vs Modern Cases

| Aspect | Cancer in Fossils | Cancer in Modern Animals/Humans |
| --- | --- | --- |
| **Tissue affected** | Mostly rare bone cancer (soft tissue rarely preserved) | Both soft and hard tissues commonly affected |
| **Detection method** | Fossilized bone examination, micro-CT scanning | Medical imaging, biopsies, lab tests |
| **Frequency identified** | Extremely rare due to preservation limits | Relatively common, especially in humans |
| **Evolutionary timeline** | Dates back at least 240 million years | Present-day disease |
| **Genetic susceptibility** | Inferred from fossil evidence | Confirmed by genetic and clinical studies |

* * *

## Özet Tablo

| Element | Details |
| --- | --- |
| **Reason for rarity in fossils** | Cancer affects soft tissues which decay and are not preserved |
| **Oldest fossil cancer found** | Osteosarcoma in a turtle leg bone (~240 million years ago) |
| **Significance** | Shows cancer’s ancient evolutionary origins in vertebrates |
| **Implications** | Cancer susceptibility is inherent in DNA of early amniotes |
| **Detection method used** | Micro-CT scan analysis of fossilized bone |

* * *

## Sık Sorulan Sorular

**1. Why is cancer rarely found in fossils?**  
Cancer mainly affects **soft tissues** that decay and are not fossilized, making it difficult to detect except in rare fossilized bones showing bone cancers like osteosarcoma.

**2. What does the osteosarcoma fossil discovery imply about cancer?**  
It implies that cancer has deep evolutionary roots and is not limited to modern humans but was present in ancient vertebrates over 200 million years ago.

**3. How do scientists detect cancer in fossils?**  
They use advanced imaging techniques like **micro-CT scans** to study irregular growths in fossilized bones that indicate bone cancer.

* * *

## Sonraki Adımlar

Would you like me to explain how cancer susceptibility evolved genetically among vertebrates, or provide a detailed comparison between bone cancers in fossils and cancer types in modern species?

* * *

@Nilay_Bekar

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**Author:** ![Geometri\_Danismani](https://sorumatik.co/user_avatar/sorumatik.co/geometri_danismani/32/158230_2.png) [@Geometri\_Danismani](https://sorumatik.co/u/Geometri_Danismani)\
**Post date:** [Şubat 5, 2026, 6:04ös UTC](https://sorumatik.co/t/resimli-soru-05-02-2026-2137/619528/3 "2026-02-05T18:04:20Z")

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## **29–31. soruların cevapları**

- Kanser fosillerde nadiren tespit edilir çünkü **yumuşak dokuları** fosilleşme sırasında korunmaz.
- Bu keşif, omurgalıların evrimsel geçmişinde kanserin ne kadar eskilere dayandığını gösterir.
- Bulgu, **amniotlarda** (memeliler, kuşlar, sürüngenler) bilinen en eski kanser vakasıdır.

1. D
2. E
3. C

## İçindekiler

1. [29. sorunun cevabı](#cancer-fossils)
2. [30. sorunun cevabı](#cancer-evolution)
3. [31. sorunun cevabı](#earliest-amniote)
4. [Özet Tablosu](#cancer-mcq-summary)
5. [SSS](#cancer-faq)

## 1. 29. sorunun cevabı

Doğru seçenek: **D) it often develops in tissues that do not survive the fossilisation process**  
Açıklama: Metinde “Cancer is exceptionally rare in fossils because it typically affects soft tissues, which are not preserved over millions of years.” ifadesi geçer. Yumuşak dokular fosilleşmediği için tümörler nadiren saptanır.

## 2. 30. sorunun cevabı

Doğru seçenek: **E) cancer roots far back in the evolutionary history of vertebrates**  
Açıklama: Yazıda, yaklaşık 240 milyon yıllık kaplumbağa fosilinde bulunan osteosarkomanın “omurgalılarda” ve özellikle amniotlarda bilinen en eski kanser vakası olduğu vurgulanır. Bu da kanserin evrimsel olarak çok eskiye dayandığını gösterir.

## 3. 31. sorunun cevabı

Doğru seçenek: **C) It indicates that our genetic tendency towards cancer goes back to the earliest amniotes.**  
Açıklama: Metin, bulgunun “susceptibility to cancer is inherent in our DNA and that cancer is not restricted to modern humans” sonucuna işaret ettiğini belirtir. Yani, genetik yatkınlık en eski amniotlara kadar uzanır.

## Özet Tablosu

| Soru No | Doğru Seçenek | Kısa Açıklama |
| --- | --- | --- |
| 29 | D | Kanser yumuşak dokuları etkiler, fosilleşmez. |
| 30 | E | Omurgalılarda kanserin çok eski dönemlere dayandığı anlaşılır. |
| 31 | C | Genetik kanser yatkınlığı ilk amniotlara kadar gider. |

## SSS

1. Neden B şıkkı yanlış?  
Çünkü metin, tespitin **mikro-CT** gibi modern yöntemlerle yapıldığına değil, yumuşak dokuların korunmamasına vurgu yapar.
2. “Amniote” ne demek?  
Embriyoları amniyotik kese içinde gelişen, **memeliler, kuşlar ve sürüngenler** gibi omurgalı grubu.
3. Önceki kanser bulguları hangi hayvanlarda görülmüş?  
Fosilleşmiş **balıklar, amfibiler** ve erken insan atalarında raporlanmış.

Başka bir sorunuz veya farklı bir metin üzerinde yardımcı olmamı ister misiniz?  
@Nilay_Bekar