Give Me an Example #1

[ivylea77]

Ah, see I did not know there were no super spiders. I will make a note of that in my little genetics thing I'm putting together.

So a ....

Spider X Albino will give you normals, het albino normals, and het albino spiders. Gotcha. I can see now that the cross would not give you spiders, since the other snake has no spider trait. (Ah I am starting to understand bit by bit)

You would get spiders b/c it is a dominant trait.

[Jay_Bunny]

Wait....right. Because the Albino is homozygous recessive, it does not carry the normal trait and therefore no normals will be given. All resulting offspring would simply show the Spider appearance with the potential of giving Albinos.

Now if you were to cross two spiders, would you then have the potential of normals?

[Purrrfect9]

Purrrfect9 -

This may sound stupid, but how do you get the Sp, SP, Ps, ect. What do they stand for as far as traits?

Ok, this might sound a bit confusing, but it's much easier for me to explain it in person than through typing, lol. Basically, every single gene is located in a specific spot on the Chromosomes. These genes are also called alleles. Alleles are the specific traits that are passed on, like in humans hair color, eye color, and so on. for snakes it's the same, scale color, scale pattern.
Every organism needs to have 2 alleles of the same kind to make a pair. These alleles are split through the process of meiosis, which is the creation of sex cells. The alleles of the parents are selected at random to go into an egg/sperm cell, which is where the Sp, SP, Ps, ect. comes from. In order to have an accurate representation of the genetics, you need to visualize every possible outcome of the allele pairings from both sets of parents. A 'het' bumblebee spider (Ss) has the possibility of passing on the genetics of the spider pattern (capital S) and the normal pattern (little s), as well as the genetics of pastel color (Capital P) and normal color (little p). Since this is a 'double trait' both one allele for spider and one allele for pastel fits into one of the boxes, and is thus crossed with the alleles from the other parent, which would give the offspring one full set of alleles.

Sorry if I confused you even more. The easiest way for me to explain it is through Biology stuff, and if you already knew that much, my bad as well, lol.

[Purrrfect9]

I'm fairly certain there is no such thing as a het for spider

It's the heterozygous dominant genetics. Ss= heterzygous dominant SS=homozygous dominant. A heterozygous dominant animal (such as spiders) can still be Heterozygous because they carry both the normal and spider gene. People tend to not call them 'hets' because they have a dominant trait

[Purrrfect9]

Because the Spider trait is dominant over the normal, all albino hets would carry the spider appearance, am I correct?

Not necessarily. If you had a heterozygous dominant spider you would have 1/2 spider 100% het albinos and 1/2 normal 100% het albinos. if you had a homozygous dominant spider, then yes you would have all spider 100% het albinos

[ivylea77]

It's the heterozygous dominant genetics. Ss= heterzygous dominant SS=homozygous dominant. A heterozygous dominant animal (such as spiders) can still be Heterozygous because they carry both the normal and spider gene. People tend to not call them 'hets' because they have a dominant trait

Be that as it may, it gets very confusing to some learning b/c now they think the have a possible het. for spider. Which we know is completly impossible.

As for breeding spider to spider, no super form has yet to be found.

[Jay_Bunny]

But the albino doesn't carry the normal allele does it. It is recessive so in order for it to display the albino coloration, it would be homozygous recessive. The spider, if het, would carry only one allele for normal, right? Therefore you couldn't have normals. I'm probably all messed up on this, right?

[Jay_Bunny]

And I understand there are no 'hets for' spiders. All normal looking snakes would not carry the spider gene because the spider trait is dominant over normal coloration and pattern, therefore if you have a spider, you will know by the snake's coloration and pattern.

[juddb]

dbl het for pied lavender albino x dbl het for pied lavender albino?

[Purrrfect9]

Be that as it may, it gets very confusing to some learning b/c now they think the have a possible het. for spider. Which we know is completly impossible.

As for breeding spider to spider, no super form has yet to be found.

Yes, but if you really want to learn the genetics of any animal, you MUST know all of the little quirks of the trade ^_^. It's really not that hard once you get used to it though. Every gene has a homozygous and heterozygous formYou just need to pay extra attention to which genes are recessive and which genes are dominant. Genetics are probably my 2nd fave thing next to anatomy/physiology though. You couldn't get me to touch my Chem II class with a 10 ft pole right now though.