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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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which structure within a bone contains cartilage cells that divide and increase the size of the bone until adulthood?
kogti [31]
Epiphyseal plate is the structure within a bone that contains cartilage cells that divide and increase the size of the bone until adulthood.

The epiphyseal plate, also known as epiphysial plate,or physis, or growth plate, is a hyaline cartilage plate in the metaphysis at each end of a long bone or diaphysis. The plate is found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line<span>.</span>
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3 years ago
Transgenic organisms can express the foreign genes because all organisms are based on the same ____
jeyben [28]
Your answer is A) Recombinant DNA. I just took this quiz. Thanks
7 0
3 years ago
Allen and andrew both have the same biological parents. Why do they not resemble either of there parents
taurus [48]
This can be because of their genetics. The siblings may not have inherited their parents looks, but maybe they inherited their grandparents looks, or even their aunts looks. This is all due to genetics. It's sort of the same thing, when two caucasian parents have an african-american child. That would be because somewhere along the family tree someone was african-american. 
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6 0
3 years ago
Read 2 more answers
1. Completa cada uno de los enunciados utilizando cada uno de los conceptos del recuadro. palabras para completar:Aeróbica, Ferm
ivann1987 [24]

Answer:

1. respiración

2. ATP

3. aeróbico

4. fermentación

5. respiración anaeróbica

Explicación:

La energía se produce en forma de trifosfato de adenina por la descomposición de moléculas de alimentos como la glucosa, etc. en un proceso de respiración. Hay dos tipos de respiración i. mi. respiración aeróbica y anaeróbica. En la respiración aeróbica, se produce más ATP en presencia de la molécula de oxígeno, mientras que en la respiración anaeróbica, se produce menos ATP cuando no hay oxígeno. La respiración es el proceso que ayuda a la disponibilidad de oxígeno para la producción de energía.

7 0
3 years ago
Eukaryotes that are not closely related and that do not share many anatomical similarities can still be placed together on the s
lozanna [386]

Answer:

Homologous genes that are highly conserved.

Explanation:

Phylogenetic trees are diagrams that represent evolutionary relationship between organisms.

It is set to represent the hypothesis that a set of species evolved fro the same ancestor.

Anatomical similarities are considered in the construction of the trees.

However , two organisms can be placed in the same tree by comparing their  genes.

If the two eukaryotes have genes that are highly conserved that similar.

7 0
3 years ago
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