Genetic diversity is the total number of genetic characteristics in a species. explain how chromosomal crossover contributes to genetic diversity.
a) chromosomal crossover is a specific, non-random process during which chromosomes are linked together and exchange dna, contributing to the genetic diversity.
b) chromosomal crossover occurs during meiosis when chromosome pairs are linked and exchange dna. thus, crossover increases the variance of genetic combinations in the haploid gamete cell.
c) chromosomal crossover results in the inheritance of genetic material by offspring and the recombination event is not variable in frequency or location.
d) chromosomal crossover occurs during the mitotic process when chromosomes are linked together and recombination takes place, increasing the variance of genetic combinations in the haploid mitotic cells formed from mitosis.

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

In order to clone adult animals, scientists typically begin with a(n)

Getting out of bed is the first goal i tackle each day. 2several small goals are achieved by me as the day progresses. 3when i am riding the bus home or walking the dog, i think about the bigger goals i have for my life. which statement correctly describes the verb tense, aspect, and voice in this paragraph? a.sentences 1 and 2 contain present progressive verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice. b.sentences 1 and 2 contain simple present verbs. sentence 3 contains present progressive verbs. all three sentences use active voice. c.sentences 1 and 2 contain present progressive verbs. sentence 3 contains simple present verbs. all three sentences use active voice. d.sentences 1 and 2 contain simple present verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice.