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Title: Evolutionary consequences if crossing over in meiosis did not occur? Post by: SAO5423 on Jun 11, 2015 I know that if crossing over did occur during meiosis there would be less genetic variation within the species. But I need two consequences and I only have one. Could someone please provide me with a second evolutionary consequence.. and explain it so I can understand. Thanks :)
Title: Re: Evolutionary consequences if crossing over in meiosis did not occur? Post by: kwash0985 on Jun 11, 2015 Advantages of Meiosis
1. Tremendous storehouse of genetic variation provides for adaptations to changing environment 2. Asexual organisms depend primarily on mutations to generate variation 3. Meiosis produces genetic variation Title: Re: Evolutionary consequences if crossing over in meiosis did not occur? Post by: SAO5423 on Jun 11, 2015 Do you know any evolutionary consequences if crossing over didn't occur?
Title: Re: Evolutionary consequences if crossing over in meiosis did not occur? Post by: psyche360 on Jun 11, 2015 I think that the evolutionary advantage to meiosis is that it enables a variety of different organisms.
And when they aren't all exactly the same (using mitosis), it can help an animal by allowing change to help the organism adapt to it's environment like the process of mutation. Title: Re: Evolutionary consequences if crossing over in meiosis did not occur? Post by: bio_man on Jun 11, 2015 Do you know any evolutionary consequences if crossing over didn't occur? If the process never evolved, biodiversity as we know it today wouldn't exist. |