a white mouse whose parents are both white in mated with a brown mose and produces all brown offspring?
965676
It's (b) homozygous recessive because a blond person with bornw eyes can marry a person with brown hair and brown eyes and they have all blond blue eyed children or all brown eyed brown hairded children, it depends on the genes from both parents. The most important thing to remember is that there are two sets of genes, mom and dad and which ever gene the parents give, the dominant one takes over. So all brown mouse was dominant over the white mouse's white genes.
308572
the female has 2 X chromasomes;\nthe male has 1 X and 1 Y chromasome; interestingly enough, it's the male who decides what gender a baby is going to be because either one X chromasome from the mother  joins with his one Y chromasome or his one X chromasome. It's kinda cool. ; )
541847
Multimammate rats (also called multimammate mice) in the genus Mastomys have 24 nipples.  Litters sizes are often greater than 12 per female (though each female could presumably manage 24 offspring).  Sexual maturity is reached in 50-60 days.  They can get pregnant again right after birth.  Gestation is just over 30 days.\n\nSo, assuming a 50-50 sex ratio, no mortality, and unlimited resources, a single reproductive pair could generate a population size of 268,586 in one year.
615648
both are different species belonging to same genus
713985
A homozygote for the gene in question, an individual bearing identical alleles, one from each parent.
221778
Homozygous red-eyed female: X^W X^W\nWhite-eyed male: X^w Y\n\nF1:\n\n------ X^W --------- X^W\n--------------------------\nX^w | X^W X^w --- X^W X^w\n----|\nY --| X^W Y ------ X^W Y\n\nGenotype: 2 X^W X^w : 2 X^W Y (1:1)\nPhenotype: 100% of offspring have red eyes.\n\nF2:\n\n------ X^W --------- X^w\n--------------------------\nX^W | X^W X^W --- X^W X^w\n----|\nY --| X^W Y ------ X^w Y\n\nGenotype: 1 X^W X^W : 1 X^W X^w : 1 X^W Y : 1 X^w Y\n\n1 of each.
851796
In search type in:\nis lupus a dominant or recessive trait.
389612
Everything about a life form is decided by DNA from the colour of it's fur or skin to it's size. This is what our parents pass on to us. However, if this is not copied properly when it is passed on to an egg or sperm cell, which becomes a baby, then the baby may have a different characteristic from the rest of its species. This is called a mutation. If this mutation gives the animal an advantage over other animals in it's species- for example if it makes a moth brown instead of white so it can blend in on trees more, and is less likely to be eaten by predators, then that animal is more likely to survive. If it then mates and passes on it's mutated DNA to more offspring then they are more likely to survive so slowly the white moths would be eaten where the brown would not, and the species has 'evolved' to be brown. Every animal you can think of has been formed by tiny mutations over millions of years. We owe evolution quite a lot!
1091647
Brown hair and brown eyes
1070800
none, only small brown dogs are born
819765
Just do a few different Punnet Squares.  Once you find the one with the right proportions, you're golden.\n\nOr you could reason that since the long hair allele is recessive, and the parents are short-haired, both parents must carry the long hair allele.  Meaning they would each have one of both alleles.
152790
Both parent were heterozygous
448635
Hmmm, they are both so cute... I think porcupines. I mean, just look at them. \n\nhttp://www.supernovajuice.com/journal/archives/2005/09/babyporcupines.jpg\n\n*Awwwwww*
1031311
Your dad carried one recessive gene for green eyes, which his gene for brown eyes was dominant, so he shows that he has brown eyes.  you got one recessive gene from your mother, and the recessive gene from your dad, making you show for recessive, making you have green-blue eyes. the same way worked for your son
639646
You should not confuse and animal that is albino with and animal that is merely white. For instance you can get white tigers that are not albino and you can tell because they have blue eyes (which indicates that they do it fact produce melanin - an albino can't). \n\nPigmentation is usually determined by multiple genes. It isn't just matter of IF the pigment is produced but WHERE it is distributed, WHEN it is produced (genes can turn on and off) and in what QUANTITY. So even if it has a working pigment gene it doesn't mean it will be expressed everywhere in the same way or at all. \n\nThere are all sorts of things that can contribute to the pattern of an animal. For instance Tortoise shell patterned cat are all female. Their pattern is due to the fact that the pigment genes are on the X chromosomes (of which famle cats have two). In females one of the two chromosome partially deactivates to stop them over producing certain proteins. This deactivation happens at random. Thus if the X chromosomes have different pigment alleles (gene variants) the cat will get patchs of different colours over its body. I don't know exactly how it works in pidgeons, but the point is it isn't down to one gene or even JUST genes but to other factors as well.
283490
Sure- close relative of the ROUS's Rodents of Unusual Size
53504
yeah they can \nplus brown and green are both dominant blue is the recessive one