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iragen [17]
3 years ago
13

Dna is comprised of smaller segments of genes that code for the production of a specific protein. the role of rna polymerase in

the initiation step of transcription is to
Biology
1 answer:
Evgesh-ka [11]3 years ago
5 0
<span>A. bind and unwind the double helix.
B. recognize the promoter sequence of the gene.
C. determine where gene synthesis will start.<span>
✓ D. </span></span><span>all of the above</span>
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For each of the diploid genotypes presented below, determine the genetic make up for all of the possible haploid gametes.
Alecsey [184]

Answer:

a. R and r

b. RY, Ry, rY, and ry

c. rY and ry

d. RY and rY

e. RYB, RYb, RyB, Ryb, rYB, rYb, ryB, and ryb

Explanation:

According to Mendelian principle, a gene is made up of 2 alleles and these alleles segregate during gametes formation to randomly unite back during fertilization. Hence;

<em>Rr can only segregate as R and r</em>

<em>RrYy can segregate as RY, Ry, rY, and ry</em>

<em>rrYy can only segregate as rY and ry</em>

<em>RrYY can only segregate as RY and rY</em>

<em>RrYyBb can segregate as RYB, RYb, RyB, Ryb, rYB, rYb, ryB, and ryb</em>

8 0
3 years ago
A student observed cells from an onion root tip in a microscope. The diagram shows her observation. What was happening in the ce
d1i1m1o1n [39]

Answer:

Cell Division!

Explanation:

What is being witnessed is mitosis. That includes your general interphase, anaphase, telophase, metaphase, cytokinesis, etc. These are all part of cell division.

8 0
3 years ago
How are the hardy-weinberg principles used in the analysis of codis genotypes and other strp-locus comparisons?
lana66690 [7]
<span>HWE is used with COIDS and non CODIS eligible DNA profiles to provide statistical caluclations for the rarity or uniqueness of profiles. Each STR kit test for a certian number of loci. Each lous has a set ladder of observed alleles. Each of these alleles has value for its observed frequency in a population. It is the rarity of each allele at each location that will give you the value for rarity of the profile as a whole. This rarity fo the profile is calucalted in CODIS under certian circumstances using to determine the eligibilty of a partial profile or a forensic mixture to determine its eligiblity for the different leves of the database.</span>
4 0
3 years ago
What is the name of the network of sugar molecules cross linked by polypeptides that encloses the entire Eubacteria?
AlekseyPX
Glycosoglycan I think
7 0
3 years ago
You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If
Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0
3 years ago
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