Suppose you are able to manipulate a plants access to components in the photosynthesis equation. drag each label to the appropri
ate bin to predict how that action will affect plant growth. for each increase or decrease, assume that every other component of the photosynthesis equation is unlimited.
1 answer:
[No image given – I found the attached image in other source]
From right to left.
1) Cytokinesis is almost finished, so it’s the end of Telophase
2) The chromatids have just split up and are migrating to each pole, so it’s Anaphase
3) All chromosomes are in the equatorial plane, so it’s the end of Metaphase
4) The chromosomes are in the poles and cytokinesis has just started, so it’s the beginning of Telophase
5) The spindle apparatus is complete and the chromosomes are moving to the equatorial plate, so it’s the beginning of Metaphase
6) The spindle apparatus is forming, so it’s Prophase
If you want to put them in chronological order, it’s like this:
6-5-3-2-4-1
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<h2>Given statement is false</h2>
Explanation:
According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA
Meselson and Stahl did an experiment on DNA replication using E.coli bacteria
- E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
- It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
- Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
- They then measured the density of the DNA using density gradient centrifugation
- This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
- Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
- Each DNA strand act as a template for synthesis of new strand
- Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment