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german
3 years ago
7

What are the scientific explanations of the origin of DNA?

Biology
1 answer:
marishachu [46]3 years ago
7 0

All cellular organisms have double-stranded DNA genomes. The origin of DNA and DNA replication mechanisms is thus a critical question for our understanding of early life evolution. For some time, it was believed by some molecular biologist that life originated with the appearance of the first DNA molecule!

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Where would a mutation need to occur for it to be passed onto offspring
Mrrafil [7]

reproductive cells like eggs and sperm

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Plants move water from the roots of the plant to the leaves through transpiration. As water evaporates from the leaf, cohesion p
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Answer:

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Other than closing and opening the stomata, stomata density also can affect the rate of gas exchange as well as transpiration. Stomata density is the presence of the numbers of the stomata per unit area. In heat or sunny area the stomata density is higher than the shady or dark area to increase the transpiration in order to cool down the leaves of the plant which prevent the chloroplast proteins to denature.

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2 years ago
An analysis of chromosomes in a culture containing mutated cells may show the loss of one or more bases making up the chromosome
ankoles [38]

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3 years ago
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Read 2 more answers
Which of the following options correctly describes the behavior of a tetrad during anaphase 1 of meiosis?
Svet_ta [14]

The answer is; C

Homologous chromosomes have the same genes on the same loci. However, they may have different forms of the same gene called alleles. These sister chromosomes, of a homologous pair, separate during anaphase I of meiosis. The two daughter cells formed will, therefore, have half the genetic material as the parent cell. This is because they will only have one set of the genes (as in diploid organisms) and are called gametes.


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