Punnett Squares | Genetics | Biology | FuseSchool

Mendel proposed that you inherit a gene either from your mother, or from your father. But not a mixture of both.

In this video we are going to look at monohybrid crosses using Punnett squares.

A monohybrid cross is the study of the inheritance of one characteristic - such as the pea-pod colour.

A Punnett square is a diagram that is used to predict the outcome of a particular cross. It is used by biologists to determine the probability of an offspring having a particular genotype. The genotype represents the genes of the organism, and is shown by two letters. A capital letter represents the dominant form of a gene (or allele), and a lowercase letter represents the recessive form of the gene.

In punnett squares, we start with an empty grid and write down the genotypes of both parents. Cross the parents genotypes to represent the possible offspring genotypes.

Punnett squares show the probability of offspring genotypes. However, these are just probabilities. They are the expected results. The actual results may be different.

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[xpinkpokix]

Who else using this for work in quarantine? Great video by the way 🙂

[katesleath]

The Music is too loud. It is distracting.
You often have this same feedback on your videos.

[kellycunha]

we liked the video but the music playing in the background was very, very distracting

[charismajennymallari]

at 1:16 Capital Y represents the dominant yellow pea pod. The dominant pod color is GREEN and not yellow

[bonniex]

I have an assignment about this! I've already made my Punnet Square and the probability. The next question is "Explain how your Punnett Square is a diagram that shows how DNA and/Chromosomes are inherited from parents" I can only show how my Punnet Square works... And I can't really explain it in words, could you give me and idea of what my answer should be?

[Science-Made-Easy]

Great Video ! I can tell the hard work you guys do

[freinicolas]

Why is it that I learn more here than in school.

[basharatahmad]

Mam I have a query that is making me tense I have to do it for my IGCSE biology My Que is when we draw punnett square for exam Is it important to circle gametes ad also sometimes we have to circle the results inside the punnett square so wouldnt it be confusing to circle gametes as well as the results? Plz plz help me

[Eyebroooo]

Hi how do you find out the percentage? I get the ratio part but percentage part I'm having some doubts

[RobloxGIRL-uwuq]

I go to a magnet school so in 5th grade we learned that and now that I’m in 7th grade it’s so easy and we are doing 9th grade stuff

[hristodimitrov]

ahaha you you are in jfk and you see this then you are a good