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Vlad1618 [11]
3 years ago
7

Why is crossing-over important?

Biology
2 answers:
jasenka [17]3 years ago
6 0
C aowiwiwjwjejwiwiwiejjdsiwiw
krok68 [10]3 years ago
6 0

Answer:

c

Explanation:

bc it sound right i could be wrong

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Please select the word from the list that best fits the definition “a representation of the earths surface”
monitta

Answer: map

Explanation: I say its map because a map represents the entire earth

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3 years ago
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Which is an example of kinetic energy?
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A downhill skier traveling down a hill has a large amount of kinetic energy because of their mass and high velocity.
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Which of the following lists steps of mRNA production in eukaryotes in the correct order?A) 5' cap addition, addition of poly-A
Assoli18 [71]

Answer:

The correct answer is B) Transcription, 5' cap addition, addition of poly-A tail, exon splicing, passage through nuclear membrane.

Explanation:

The transcription process in eukaryotes takes place in the nucleus of the cell and after transcription post-transcriptional modification also takes place in the nucleus which is necessary to guide the mRNA out of the nucleus.

First, the process of transcription takes place in which DNA is transcribed to mRNA by an enzyme called RNA polymerase. After transcription post-transcriptional modifications takes place in the given order.

1. Capping: In capping process 7-methylguanosine is added by capping enzyme at 5' end of mRNA.

2. Polyadenylation: In polyadenylation, many poly-A residues are added at the 3' end of the mRNA called the poly-A tail.

3. Intron splicing: Introns are the non-coding sequence present in mRNA which are spliced out of mRNA and all exons are joined together.

After these post-transcriptional process, the mature mRNA is transported out of the nucleus through the nuclear membrane.

5 0
3 years ago
Eighty-nine percent of illnesses among children in child care settings are attributed to which of the following
yan [13]
The options provided for the question above are as follows:
A. Respiratory tract illnesses
B. Skin infection
C. Acute infectious diaherea
D. Intestinal infections.
The correction option is A.
Respiratory tract illnesses account for the majority of sickness that occur in child care settings. Such infection include those that affect the lower and the upper respiratory tracts; examples include: otitis media, sinusitis, bronchiolitis, pneumonia, etc. Children who attend out of home child care has greater risk of contacting these diseases. 
7 0
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You have adopted a gray mouse, which you know is a wild type phenotype. When crossed with a white mouse, your gray mouse has a f
sashaice [31]
Assuming the white phenotype is recessive. white: gg
I think the gray mouse is Gg because the offspring were pretty equally distributed in terms of color. See the punnet square below.
g g
G| Gg Gg
g| gg gg

If the Gray phenotype is recessive, then gray: ww but only if white is Ww because its about 50% chance for both.
3 0
3 years ago
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