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wolverine [178]
4 years ago
12

What is a chemical property

Biology
2 answers:
IceJOKER [234]4 years ago
8 0
Oh ok those are the better choices. well a physical reaction means something changed in the property itself. so we can take off B and C. a chemical reaction means the property of the item changed completely and stayed that way. so im going with D.
Fudgin [204]4 years ago
3 0
The answer is actually B, since rusting is an obvious chemical reaction which cannot be undone. A is just fact, C can be undone by cooling, and D can be undone by splitting the molecules apart. So the answer is B.
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n camellia plants, flower color is controlled by a single gene with codominant alleles. A camellia plants with red flowers (RR)
Daniel [21]

Answer:

The phenotypes of the offsprings wil be pink.

Explanation:

  • It is stated that the alleles of the gene are co-dominant.
  • Co-dominant alleles express alongside each other.
  • They do not mask the effect of each other.
  • Thus, when Camellia plants with red flowers (RR) are crossed with Camellia plants with white flowers (WW).
  • We get flowers with pink phenotypes, as pink is the colour that comes midway of red to white.
  • The genotypes of the plant will be RW.

7 0
4 years ago
Meiosis Foldable Activity 515.2
Aleksandr-060686 [28]

Explanation:

During the process of prophase I, the nuclear envelope containing chromosomes has only partly broken down homologous chromosomes are joined together by proteins and a complex or pairing call synapsis- corresponding genes on sister chromatids are aligned precisely.

The syanapsis allows for crossing over which is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. In meiosis, the number of chromosomes (2n) is halved to 23 chromosomes (haploid number)through meiotic divisions, producing 4 haploid (n) germ cells or gametes (sperm or eggs), each containing half the number of chromosomes as its parent cell.

In Meiosis I

  • homologs pair off into bivalents
  • At crossing over: the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined in prophase I  forming bivalents; tetrads are formed.
  • Spindle fibers from centrioles join sister chromatids together at their centromeres in metaphase I, pulling them to the equator of the cell;
  • then, in anaphase I, while joined, they are pulled to opposite sides of the cell; the cell body splits and the nuclear envelope reforms in telophase I

In Meiosis II...

  • Later, in prophase II, the nuclear envelope disintegrates and mitotic spindle fibers are formed
  • independent assortment occurs. in metaphase II of meiosis: spindle fibers attach to centromeres, chromatids align independently at the equator. Genes segregate independently into new combinations as sister chromatids are pulled apart by their centromeres in anaphase II
  • in telophase II the cells' nuclei and membrane are then formed with each containing the haploid number (n)
  • Following the formation of gametes in the last stage, randomized fertilization occurs in sexual reproduction sperm cells fertilize an ovum to form a zygote. This occurs randomly by chance, to result in a complete set of chromosomes 2n, that is a novel combination of half each parent's number of chromosomes

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

4 0
3 years ago
The image of the flapper was the embodiment of which aspect of the 1920's?
rusak2 [61]

The correct answer is option c that is, changing the role of women.  

The flappers were young, scandalous, and liberated. They denied the older ways and became excited over the popular culture and jazz. They did what the society did not anticipated from the young women.  

They smoked, danced to Jazz Age music, they spoke their own language, they wore makeup, and they lived for the moment. The flapper fashion followed the lifestyle, and the look became trendy due to the lifestyle.  


8 0
3 years ago
Read 2 more answers
What neurotransmitter is released by the axon of a sympathetic preganglionic neuron to communicate with the sympathetic postgang
Feliz [49]

Answer:

Explanation:

Cholinergic neurons release acetylcholine as a neurotransmitter. The cell bodies of preganglionic neurons of sympathetic division are present in the lateral horns of 12 thoracic and first two lumbar segments of the spinal cord. These are the cholinergic neurons and their axons release the acetylcholine as neurotransmitter into the synaptic cleft. The acetylcholine released by preganglionic sympathetic neurons binds to the cholinergic receptors present in the membranes of postganglionic neurons of the sympathetic division.

6 0
3 years ago
Dwarf mistletoes are flowering plants that grow on certain forest trees. They obtain nutrients and water from the vascular tissu
Galina-37 [17]

Answer:

C) commensalism

Explanation:

Commensalism is an interaction in which one organism benefits without causing any harm to the other. The other organism derives no benefit from the relationship.

The scenario above in which the dwarf mistletoe obtains nutrients from the vascular tissues of trees is a perfect example of such a relationship.

Parasitism is similar to this but the other organism is harmed in the process.

6 0
3 years ago
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