Lab Simulation - Mendelian Inheritance: From Genes to Traits

What percentage of genetic information is passed on from children to their offspring?

50% from each parent

What is the name of the haploid cells that carry the genetic information from each parent?

Gametes

What is the phenotype of an individual?

Their observable characteristics

What is the genotype of an individual?

Their genes

What is an allele?

An alternative form of a gene

How do we represent dominant and recessive alleles?

Capital letters for dominant, lowercase letters for recessive alleles

What is a hybrid?

An offspring with parents from two different breeds

Why do all offspring have the same fur color?

They have the same alleles for the relevant genes

Why do all offspring have brown fur?

Because the allele for brown fur color is dominant

What is the genotype of the offspring?

Aa

Look at the offspring of the mice from the cross that we performed. How many brown and black mice are there?

Three brown, 1 black mouse.

Do the predicted phenotypes from the Punnett square agree with the experiment you performed earlier?

Yes

Can you tell me if eye color has an effect on colorblindness?

It has no effect

What does it mean when a trait is independent of another trait?

The inheritance of a trait does not affect the inheritance of another trait

During gamete formation, two alleles will end up in different gametes due to?

The law of segregation

The law of independent assortment states that

Genes segregate independently during gamete formation

Which one of the two cells is male?

The one on the left

What is the gene for colorblindness represented by?

The red section

Do you think colorblindness is a recessive trait?

Yes

Knowing that Joseph is colorblind, what is his genotype?

XcY

If Joseph has children with someone who doesn't carry the gene for colorblindness, will his children be colorblind?

No, none of them will be colorblind

With that in mind, can you now determine if Joseph's children will inherit his colorblindness?

We can't be sure