biology inheritance/genetics question?

[thatdumbstudent]

Explain how an offspring may have a different genotype from either of their parents at a particular locus?

[caffinatedloz]

If you post that here you may get more responses as more people will see it!

[PhoenixxFire]

Hey!
We want to help you learn, but us just doing your homework for you isn’t an effective way to improve.

If you want help answering your homework questions then we’d be happy to help but you need to tell us what your current understanding is/what you’re stuck on first.

[thatdumbstudent]

Hey!
We want to help you learn, but us just doing your homework for you isn’t an effective way to improve.

If you want help answering your homework questions then we’d be happy to help but you need to tell us what your current understanding is/what you’re stuck on first.

hi! ... so all i know is that the parents can be heterozygous or homozygous dominant/recessive.. the thing is I don't understand how an offspring could possibly have a completely different genotype from its parents?

[caffinatedloz]

Have you ever used a Punnett Square?

[thatdumbstudent]

Have you ever used a Punnett Square?

yes i have... so the crossing over causes the offspring to have a different allele from one of its parents.. correct?

[caffinatedloz]

Crossing over does not have much to do with punnett squares. Crossing over is the process where genes from homologous pairs of chromosomes are broken off and exchanges during late Prophase I (in meiosis) which contributes to genetic diversity.

In a Punnet Square, when a cross is performed, the offspring will receive one of two alleles from each parents, making for a total of two. These two alleles (the genotype) may be different from either parent organism.

For example if you crossed a mother (DD) and a father (dd), all offspring would have the genotype (Dd), meaning that they do not have an identical genotype to either parent.

I'm not really sure if this is what the question is asking, but hopefully it helps.

[Sine]

Explain how an offspring may have a different genotype from either of their parents at a particular locus?

Think about this example

AA x aa

Offspring 100% Aa

Aa genotype is different to AA and also aa.

[thatdumbstudent]

Crossing over does not have much to do with punnett squares. Crossing over is the process where genes from homologous pairs of chromosomes are broken off and exchanges during late Prophase I (in meiosis) which contributes to genetic diversity.

In a Punnet Square, when a cross is performed, the offspring will receive one of two alleles from each parents, making for a total of two. These two alleles (the genotype) may be different from either parent organism.

For example if you crossed a mother (DD) and a father (dd), all offspring would have the genotype (Dd), meaning that they do not have an identical genotype to either parent.

I'm not really sure if this is what the question is asking, but hopefully it helps.

ah this makes sense, thank you!!