# Counting Babies
URL:: https://brilliant.org/daily-problems/counting-babies/
Author:: brilliant.org
## Highlights
> A gene is made of at least two **alleles**, or variations of that gene. Each parent randomly passes one of its alleles to its offspring. ([View Highlight](https://read.readwise.io/read/01g93f69m1j4gpx1av6955p0ev))
> We can visualize their offspring's possible allele combinations with a **Punnett square**. ([View Highlight](https://read.readwise.io/read/01g93f72smsceng7t4d2znnj9f))
>  ([View Highlight](https://read.readwise.io/read/01g93h1zxm49e1zr1fee7d2yp2))
> generally, different genes are inherited independently. So, we can focus on one brillibug gene at a time. This simplifies the calculations: the probability of some combination of genes is the same as the product of the probabilities of each gene in the combination. ([View Highlight](https://read.readwise.io/read/01g93f87dfsh08wgre6sw2b2re))
---
Title: Counting Babies
Author: brilliant.org
Tags: readwise, articles
date: 2024-01-30
---
# Counting Babies
URL:: https://brilliant.org/daily-problems/counting-babies/
Author:: brilliant.org
## AI-Generated Summary
A brillibug mother is pregnant with a litter of 80 babies. How many of them do we expect to display only dominant traits?
## Highlights
> A gene is made of at least two **alleles**, or variations of that gene. Each parent randomly passes one of its alleles to its offspring. ([View Highlight](https://read.readwise.io/read/01g93f69m1j4gpx1av6955p0ev))
> We can visualize their offspring's possible allele combinations with a **Punnett square**. ([View Highlight](https://read.readwise.io/read/01g93f72smsceng7t4d2znnj9f))
>  ([View Highlight](https://read.readwise.io/read/01g93h1zxm49e1zr1fee7d2yp2))
> generally, different genes are inherited independently. So, we can focus on one brillibug gene at a time. This simplifies the calculations: the probability of some combination of genes is the same as the product of the probabilities of each gene in the combination. ([View Highlight](https://read.readwise.io/read/01g93f87dfsh08wgre6sw2b2re))