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My name is Ann [436]
3 years ago
5

12.appedmentum.com/assessments delivery/ua/la/launch/49032138/100076593/aHROCHM6Ly9mMiShcHAUZWRtZW5ODWOuY29tL2xYXJuZXItdWkvdXNlc

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Pretest: Searching for Identity
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Select the correct answer
What does Dawson rubbing his hands on his pants suggest about how he is feeling?
Debate Day
The sound of shuffling papers and soft murmurs filled the
brightly lit meeting room. The day Dawson had been eagerly
preparing for with his debate team had arrived. It had been
three months of long nights studying and practicing.
He glanced over at the other team who were speaking softly to
each other in a huddle. "Why do they seem so calm and
collected?" he muttered to himself.
He suddenly felt a strong sense of uneasiness emerge in the pit
of his stomach, and he looked to see if he could gauge how his
team was feeling
"Are you doing alright, Dawson?" his teammate Elaine asked.
"Ready for this?"
Dawson nodded his head quickly in reply.
The moderator made a brief announcement and Dawson
approached the podium, rubbing the palms of his hands on his
pant legs
After two hours of intense debate rounds, one of the judges
stood to announce the winner. Dawson's team erupted in
cheers and began giving each other high fives. Dawson could
not hide his relief and elation
OA. It suggests he is very nervous as he approaches the podium.
OB. It suggests he likes to warm up before he speaks
OC It suggests he has not prepared well for the debate.
OD. It suggests he is excited about his opportunity to speak.
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1 answer:
mario62 [17]3 years ago
6 0

Answer:

OA. It suggests he is very nervous as he approaches the podium.

Explanation:

In the given scenario, the narrator mentions how Dawson was <em>"rubbing the palms of his hands on his pant legs."</em> This shows his nervousness because normally, rubbing of palms together is a sign of one's nervousness.

Moreover, the line <em>"[H]e suddenly felt a strong sense of uneasiness emerge in the pit of his stomach" </em>also reveals his 'nervous' state. He appeared uneasy, which is further clarified by the last line <em>"Dawson could not hide his relief and elation."</em>

Thus, the correct answer is option A.

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Explain the role of chromosomes, DNA and genes in the formation of phenotypes in an organism.
irina [24]

Answer: Mitosis occurs in somatic cells; this means that it takes place in all types of cells that are not involved in the production of gametes. Prior to each mitotic division, a copy of every chromosome is created; thus, following division, a complete set of chromosomes is found in the nucleus of each new cell. Indeed, apart from random mutations, each successive duplicate cell will have the same genetic composition as its parent, due to the inheritance of the same chromosome set and similar biological environment. This works well for replacing damaged tissue or for growth and expansion from an embryonic state.

Because the genes contained in the duplicate chromosomes are transferred to each successive cellular generation, all mitotic progeny are genetically similar. However, there are exceptions. For example, there are genetic variations that arise in clonal species, such as bacteria, due to spontaneous mutations during mitotic division. Furthermore, chromosomes are sometimes replicated multiple times without any accompanying cell division. This occurs in the cells of Drosophila larvae salivary glands, for example, where there is a high metabolic demand. The chromosomes there are called polytene chromosomes, and they are extremely large compared to chromosomes in other Drosophila cells. These chromosomes replicate by undergoing the initial phases of mitosis without any cytokinesis (Figure 2). Therefore, the same cell contains thick arrangements of duplicate chromosomes side by side, which look like strands of very thick rope. Scientists believe that these chromosomes are hyper-replicated to allow for the rapid and copious production of certain proteins that help larval growth and metamorphosis (Gilbert, 2008).

Gene Transmission in Meiosis

Three photomicrographs show polytene chromosomes. The chromosomes look like horizontal tubes composed of white, grey, and black bands against a black background. They look like thick, striated lengths of rope.

Figure 2: Examples of polytene chromosomes

Pairing of homologous chromatids results in hundreds to thousands of individual chromatid copies aligned tightly in parallel to produce giant, "polytene" chromosomes.

© 2007 Nature Publishing Group Novikov, D. et al. High-pressure treatment of polytene chromosomes improves structural resolution. Nature Methods 4, 483 (2007). All rights reserved. View Terms of Use

Although he did not know it, Walther Flemming actually observed spermatozoa undergoing meiosis in 1882, but he mistook this process for mitosis. Nonetheless, Flemming did notice that, unlike during regular cell division, chromosomes occurred in pairs during spermatozoan development. This observation, followed in 1902 by Sutton's meticulous measurement of chromosomes in grasshopper sperm cell development, provided definitive clues that cell division in gametes was not just regular mitosis. Sutton demonstrated that the number of chromosomes was reduced in spermatozoan cell division, a process referred to as reductive division. As a result of this process, each gamete that Sutton observed had one-half the genetic information of the original cell. A few years later, researchers J. B. Farmer and J. E. S. Moore reported that this process—otherwise known as meiosis—is the fundamental means by which animals and plants produce gametes (Farmer & Moore, 1905).

The greatest impact of Sutton's work has far more to do with providing evidence for Mendel's principle of independent assortment than anything else. Specifically, Sutton saw that the position of each chromosome at the midline during metaphase was random, and that there was never a consistent maternal or paternal side of the cell division. Therefore, each chromosome was independent of the other. Thus, when the parent cell separated into gametes, the set of chromosomes in each daughter cell could contain a mixture of the parental traits, but not necessarily the same mixture as in other daughter cells.

To illustrate this concept, consider the variety derived from just three hypothetical chromosome pairs, as shown in the following example (Hirsch, 1963). Each pair consists of two homologues: one maternal and one paternal. Here, capital letters represent the maternal chromosome, and lowercase letters represent the paternal chromosome:

Pair 1: A and a

Pair 2: B and b

Pair 3: C and c

When these chromosome pairs are reshuffled through independent assortment, they can produce eight possible combinations in the resulting gametes:

A B C

A B c

A b c

A b C

a B C

a B c

a b C

a b c

Hope This Helps!!!

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Which term describes instances in which new words are associated with their meaning after only a brief encounter
ipn [44]

Answer:

fast mapping is the answer

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Pressed to the wall ,dying but fighting back.
Dmitrij [34]

Answer:

dying I think so please follow me cool guys

7 0
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Who needs the helping hand of jackle ill help you on any test you got in english
sp2606 [1]

Answer:

That's grate actilly can you go answer my latest english or math question please

Explanation:

thank you for the points btw

4 0
2 years ago
You—you— Your shadow is sunlight on a plate of silver; Your footsteps, the seeding-place of lilies; Your hands moving, a chime o
notka56 [123]

Answer:The figurative language used in the above stanzas is METAPHOR.

Metaphor is a comparison of two objects that are unrelated but have similarities. These similarities are used for more rhetorical effect and to catch audience's attention.

Shadow is compared to sunlight on a plate of silver.

Footsteps is compared to seeding-place of lilies

Moving hands is compared to chime of bells.

Movement of hands is compared to light of a rising sun and hopping of birds

4 0
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