In Labrador retrievers, black coat (B) is dominant to brown coat (b) and normal vision (N) is dominant to blindness (n). The genes for coat color and blindness are on separate chromosomes. You cross a dog that is heterozygous for coat color and vision with a blind brown dog. Which statements are TRUE about this scenario

a. The probability of getting a brown blind puppy is 1/16
b. The probability of getting a brown puppy with normal vision is ¼
c. The probability of getting a black blind puppy is 1/2.
d. The probability of getting a brown puppy is ½
e. Because blindness is recessive, the probability of getting a blind puppy is ¼
f. The brown blind perent will make ell bn gametes
g. A black blind puppy that results from this cross could have the genotype BBnn
h. A black puppy with normal vision that results from this cross will have the genotype BbNn
i. Because two traits are being followed, the phenotypic ratio of offspring will be 9:3:31

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

What is used to keep track of the gamates and possible offsprings combination

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing