The answer for your question is G2!
An anterior pituitary gland
Answer:
cystic fibrosis, phenylketonuria, hemochromatosis, Bloom's syndrome, and ataxia-telangietasia. The X-linked recessive diseases are due to mutations in genes located on the X chromosome and include Duchenne's muscular dystrophy, Fabry's disease, steroid sulfatase deficiency, and ocular albinism.
Explanation:
There are dominant and recessive alleles. when one allele from each parent combine, there are a couple different possibilities for traits. for example, whenever a parent gives off a dominant allele, you will automatically have that trait because it would have combined with another dominant allele, or it would have overpowered the other recessive alelle. you cam find these different combos by using a punnet square. but also, some traits, such as eyecolor, are determined by incomplete dominance, when the colors of your parents in their greenness combine in to a new color. or, you can have codominance when you have one of each eyecolor of your parents.
Some species we see in Alaska and nowhere else in the Wolrd are:
Bats
Shrews
Bears
Seals
White Wolfs
Sea lions
Racoons
Walrus.
Bears, Seals, White Wolfs and Sea lions survive the cold weather much more than those other animals.