Human activity has led to clear cutting of the world's rainforests. which is the best explanation of why this change has been detrimental? a) cutting down the rainforest disrupts some trading routes. b) cutting down the rainforest has created more land on which to grow food. c) cutting down the rainforest makes the areas less desirable for tourists. d) cutting down the rainforest destroys the habitat for a number of species

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.