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3 years ago

What is the difference between a scientific hypothesis and a scientific theory?

2 answers:

8 0

A scientific hypothesis is an educated guess of what will happen in the experiment.

A scientific theory is someone's thoughts on why something happened in an experiment. However, this cannot be proven. The opposite of this is a scientific law. This is statement of what will always happen under the same conditions.

Vladimir79 [104]3 years ago

3 0

Hi! :")

Hypothesis: Recommended explanation of the case taken as a starting point for further investigation.

Theory: The explanation obtained by the scientific method and which has a solid foundation that is tested and approved through observation and experiments.

Difference: Theory is not predicted in any field The accuracy of the same big bang theory is unknown.. However, the hypothesis is still under investigation and proof.

Good Luck ;)

#Turkey

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80-100 thousand

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4 years ago

The video compares the key similarities and differences between mitosis and meiosis. Determine which events occur in mitosis, me

notka56 [123]

Answer:

Mitosis:

A single division occurs, separating sister chromatids

End result is two diploid cells that are genetically identical to each other and the parent cell

Meiosis:

The first division separates homologous pairs; the second division separates sister chromatids

Homologous chromosomes pair up and form chiasmata

Homologous pairs of chromosomes line up on the metaphase plate

Daughter cells contain recombinant chromosomes

End result is four haploid cells that are genetically different from each other and the parent cell

Mitosis and Meiosis:

Chromosomes duplicate during interphase

Process starts with a diploid cell

Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell

Explanation:

Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.

A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.

Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.

Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.

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3 years ago