Assume that k and m are two unlinked genes that affect hearing. the dominant k allele is necessary for hearing, and the dominant m allele causes deafness regardless of the other genes present. what fraction of the offspring of parents with the genotypes kkmm and kkmm will most likely be deaf? ** draw the punnet sqaure and explain the answer in detail. a) 1/4b) 3/8c) 1/2d) 5/8

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

maritime tropical may be your answer.

youre right there are

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.