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Keycap Digit One

Theme D - Continuity & Change

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Direct Hit

Theme A - Unity & diversity

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Page Facing Up

Theme B - Form & Function

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Pill

Theme C - Interaction &  Interdependence

Hey future Biologists! Ready to dissect (not literally, relax 😅) the thrilling world of genetic recombination? Let&#39;s do it like Mendel but with a 2023 twist!

<ul>
	<li>Recombinant: An individual with a different combo of alleles from either parent.</li>
	<li>Genetic Recombination: The magic that happens during meiosis to give you those recombinants.</li>
	<li>Linked Genes: Genes that are BFFs and hang out on the same chromosome.</li>
	<li>Unlinked Genes: Genes that are like distant cousins and are on different chromosomes.</li>
</ul>

<ul>
	<li>Recombinants are the product of genetic recombination that occurs during meiosis.</li>
	<li>If the genes are unlinked, they independently assort (like choosing your dinner from a buffet).</li>
	<li>If genes are linked, they can still mix and match through crossing over (like trading Pok&eacute;mon cards).</li>
</ul>

🎮 Real-world example: Think of alleles like different skins in a video game. Usually, your avatar inherits the &#39;skins&#39; from its &#39;parents&#39; but sometimes, there&#39;s a glitch (crossing over) that mixes things up!

Scenario

<ul>
	<li>Round &amp; yellow seeds (RRYY) crossed with wrinkled &amp; green seeds (rryy).</li>
</ul>

Observations

<ul>
	<li>F1 generation = all round &amp; yellow seeds (RrYy).</li>
</ul>

Backcross

<ul>
	<li>RrYy plants were crossed back with wrinkled &amp; green (rryy).</li>
	<li>F2 results: A nearly 1:1:1:1 ratio of all four combos.</li>
</ul>

Conclusion: The genes are unlinked.

🍟 Real-world example: Imagine ordering a combo meal with fries and a shake. You can swap out flavors independently; that&#39;s unlinked genes for you!

Scenario

<ul>
	<li>Coloured &amp; shrunken seeds crossed with white &amp; non-shrunken seeds.</li>
</ul>

Observations

<ul>
	<li>F1 generation = all coloured &amp; non-shrunken (CcNn).</li>
</ul>

Test Cross

<ul>
	<li>Crossed F1 plants with a homozygous recessive variety (ccnn).</li>
	<li>F2 results: No 1:1:1:1 ratio!</li>
</ul>

Conclusion: The genes are linked.

🏈 Real-world example: Imagine a sports team where two players always pass to each other. They&#39;re a dynamic duo, always linked! Similarly, the genes for seed color and shape in corn are linked, so they don&#39;t mix as freely.

<ul>
	<li>Frequency of recombination can be measured by crossing heterozygous individuals for both genes with homozygous recessive individuals for both genes.</li>
</ul>

📊 Real-world example: Think of it as surveying a group of people to find out how many are fans of both Marvel and DC (yeah, they exist!). If the number is high, those &#39;fandom genes&#39; are probably unlinked!

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Hope this made your study session a little less yawn-inducing. Now go ace that exam, future DNA whisperers! 🎉

Theme D - Continuity & Change

Unlocking Gene Linkage & Recombination!

Table of content

Key Terms 🌟

The Recombination Basics 🍇

Unlock the Full Content!

Theme D - Continuity & Change

Unlocking Gene Linkage & Recombination!

Table of content

Key Terms 🌟

The Recombination Basics 🍇

Unlock the Full Content!