Struggling with my genetics experiments. Breeding fruit flies and looking at their eye colors

Struggling with my genetics experiments. Breeding fruit flies and looking at their eye colors.

Out of 229 flies, I got 173 wild type, and 56 sepia. That's 75.55% and 24.45%. A textbook clear example of 3:1 inheritance of a recessive allele.

But the chi square analysis says that I have to accept the null hypothesis, that it's just coincidence. Something about that seems wrong when the data fits so perfectly.

I am going to start studying genétics next year, mind giving moar details Senpai?
:^3

This is a very simple experiment on inheritance tracking eye color. Wild type is a brick red (as shown in the op picture) and sepia is a yellow-brown color.

We did two crosses. 4 female sepia x 4 male wild type. And 4 female wild type x 4 male sepia.

Allowed them to breed, and isolated the F1 generation. All of the F1 generation have wild type eye coloration. From the F1 generations we crossed 4 females and 4 males.

The F2 generation yielded 229 flies total, which we counted as 173 wild type and 56 sepia eyed.

Because the trait is not sex linked (or it would have appeared in one of our F1 generations) I lumped them all together.

the most important thing you can do at this point is learn how to make a standard deviation

I guess. It's just frustrating. Talked to my professor when I first added them up and her words were that it was "Textbook for an autosomal recessive allele." That was before I had done the chi-square analysis mind.

Just ugh.

vp here
does your fly have the ha? it doesn't come from nowhere

This is sick. Absolutely fucking sick.

You're telling me you're forcing fruit flies to have sex and then you're LOOKING AT THE COLORS OF THEY'RE EYES?! Inhumane. How is this shit allowed?

Pretty segoi desu senpai
Do you develop zoofilia after watching animals fucking each other like stated?

Only the ones with pretty eyes are attractive. But my feelings (or lack thereof) aren't going to give me a bigger sample size.

Not significant.

FML

You would expect to accept the null hypothesis.

Also, nice blog you got here.