I mated 2 white mice and ended up with 12 dark grey pups, can someone explain pleeease?

Answer 1

You have two recessive mice.There white gene is a weak gene but the grey gene is the stronger gene.When the two white mice were put together there weak (White) gene was masked by the stronger(Grey) gene.You have Very low odds of them making any white mice.

Answer 2

What the first person said makes no sense at all.
When you breed two animals with the same recessive trait, like blue eyes or albinism, there is no possible way for them to produce animals with a dominant trait. Here's why:
Some genes have two or more versions. Typically, there's a working (Dominant) version and a broken (recessive) version. Every animal has one gene from its mother and one from its father. There are four possible combinations:
CC (C is for a working color gene, c is for a broken one)
Cc
cC (the same as Cc)
cc
All the combinations but the cc one make a colored animal. The cc animal has no working color genes. It's the only one of all of them that could be white.
Breeding two white animals together should only produce more white young--since neither of them has a working C gene to pass down to their offspring--unless the two white animals have different broken genes.
There's a long, complicated process to making color. Lots of proteins are involved, like an assembly line. If the gene that makes just one of the proteins is broken, the whole process won't work. But there's lots of different proteins along the line that will shut it down. It could be that your mice were different types of white: different color-making proteins were broken.
If one protein gene is called D and the other called C, and you need C and D to make color, here's how two albinos could mix.
Say the father has a broken D gene: he's dd. We don't know anything about his C gene, since the color-making process is already broken.
So the father could be dd, Cc, or dd, CC, or dd, cc for all we know.
Same with the mother: suppose she's albino because she's a cc. We don't know about her D genes.
She could be cc, DD, or cc, Dd, or cc, dd.
If each parent has a working copy of one color gene (father is dd, Cc, mother is cc, Dd) the offspring could end up with Dd, Cc. This means they have working copies of the D and C genes, so they can make color.
In your case, since all the offspring had both D and C genes, the mother must have been cc, DD and the father dd, CC.
Short story is you must have had two different types of white mice: they were white for different reasons.

Answer 3

well, it all dpens on the dna in the 2 mice, like humans. humans pass on thier dna to thier offspring who in turn pass on that dna to thier own offspring. thats how you get a brother or sister looking like some distant relative or a grand parent. the same thing happens to animals.

Answer 4

This might have happened because of the 2 white mice's ancestry. They probably had a gray mouse ancestor of something. that's pretty cool.

Answer 5

It must be heredity from a previous generation.

Answer 6

dna passes to animals just like it passes to people. hair,fur,same difference

Answer 7

It's just how genetics work.