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nasty-shy [4]
3 years ago
7

Which conclusions can be drawn from the last paragraph of this story? Choose all that apply.

English
1 answer:
Kisachek [45]3 years ago
7 0
<span>

Business owners in Pine Grove support its beautification

</span><span>Samara feels a sense of accomplishment.</span>
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11. Authors'
kherson [118]

Answer:

I think it's d

Explanation:

the author may want to say their credentials

7 0
3 years ago
Which of the following is a correct definition of an indicative verb in a sentence?
Paha777 [63]
Indicates a state of reality.

Indicative verbs state what is going on at that moment, or what could very possibly happen.

e.g "I run through the forest".
3 0
3 years ago
Read 2 more answers
A typeface in which a small ornamentation appears at the tail end of each character is __
iogann1982 [59]

Answer:

- Serif.

Explanation:

A typeface is exemplified as the group or set of characters that are constructed in the same design or pattern. These characters incorporate specified letters as well as symbols and punctuation marks and numbers in order to enhance the worth of the message by making it convenient for the readers to read and understand.

As per the question, the typeface in which a small or short line employed as an ornamentation or embellishment at the end of the character to enhance the impact of the basic/primary character. Thus, <u>'serif'</u> is the answer.

3 0
3 years ago
In the following sentence, which possessive pronoun is being used as an adjective?
allsm [11]
Answer: “Our”

Explanation: A possessive pronoun is a pronoun indicating possession, for example mine, yours, hers, theirs. (In this case, it’s the word “ours”)
3 0
3 years ago
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!!!

6 0
3 years ago
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