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Sindrei [870]
3 years ago
15

If you could travel millions of years back in time the land masses on earth would not look lke they do today. huge areas were co

vered in swampy, marsh-like conditions. today, many of those previously wet areas are now dry land. so what happened to change land from wet to dry?
Biology
1 answer:
Nataliya [291]3 years ago
8 0
There are many answers to your question but one way is the evaporation cycle.
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Chromosomes have hereditary function that are capable of self-duplication and they have thread-like structures seen inside the nucleus of plant and animal. In plants, they go through a cycle called alteration of generation that has multicellular stages. One is sporophyte that is a diploid, and the other is gametophyte with a haploid.

Moreover, spores are produce through meiosis so it go through a process of chromosome reduction in order to create a haploid spores. While, gametes undergo mitosis and the structure is already a haploid, which means that the number of chromosomes will not change in order to produce haploid. In this case, the plant have both spores and gametes and the similarities is that, they are both singles celled and a haploid. Therefore, the number of the chromosome in the gametophyte generation is also 32.

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3 years ago
What is the definition for Allele?
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Explanation:

One of a number of alternative forms of the same gene occupying a given position, or locus, on a chromosome is allele.

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I think it’s Self-Instruction training

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C. mRNA serves as the template for DNA, which carries the code to the ribosome for protein construction.

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Can small trees contribute oxygen?
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Yes, because even though other trees produce more oxygen, the small trees will still produce some oxygen. On top of this there are more small trees than big trees, so even though they make less oxygen, in whole they end up making more when added together!
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