Biology, 01.11.2019 10:31 volocibel

In a plant's life cycle, the diploid stage is known as

a. alternation of generations.
b. n phase.
c. the sporophyte.

c, i think? explain : )

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Answer from: quinteroalex2001

You are correct, the sporophyte is the diploid stage. The easiest way to explain this to think about the terms diploid and haploid. Diploid or 2n means that there is a full set of chromosomes present - two copies of each - one from the female and one from the male. Haploid or n means that the chromosome number has been reduced by half - or we separate the pairs of chromosomes. The reason we need to have a haploid stage is to prepare for fertilization. An organism, whether a plant or animal, needs to maintain its chromosome number to be healthy. Because two sex cells fuse during mating, those sex cells have to have half of the chromosomes to make sure the resulting zygote gets the right number of chromosomes. So back to sporophytes - the sporophyte phase is when the sex cells (gametes) have fused to form the zygote and therefore have each donated their DNA (chromosomes) to give the offspring its full set. I have attached a diagram that might help you understand. I hope I made sense and that I was able to help. Feel free to message me if you need more information.
In a plant's life cycle, the diploid stage is known as a. alternation of generations. b. n phase.

In a plant's life cycle, the diploid stage is known as a. alternation of generations. b. n phase.

Answer from: Quest

by drinking easy

very easy

Answer from: Quest

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

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In a plant's life cycle, the diploid stage is known as

a. alternation of generations.

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