Which of the following would be the last step in the process of DNA fingerprinting? A DNA sample is obtained.
B. Restriction fragments are separated.
C. Restriction enzymes are used to cut DNA into fragments.
D. DNA fragments containing repeats are labeled with radioactive probes.

Answers

Answer 1

Answer:

Answer:

(D). DNA fragments containing repeats are labeled with radioactive probes.

Explanation:

DNA fingerprinting can be defined as a process, which involves identification of DNA characteristics of an organism as unique in all organisms as fingerprints.

There are total five steps in DNA fingerprinting, which includeisolation of DNA from the cells, digestion of DNA with restriction enzymes, separation of DNA fragments in agarose gel, transfer of DNA fragments to a blotting paper, and labeling of DNA fragments with radioactive probes of specific sequence to see the results.

Thus, the correct answer is option (D) as represents that last step of DNA fingerprinting.

Answer 2

Answer: D. Fingerprinting involves binding radioactive probes to label DNA that has been digested by an endonuclease and separated out

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If you were trying to identify an unknown adult animal that must be either an echinoderm or chordate, which morphological feature(s) would guarantee that your organism was an echinoderm rather than a chordate.

The curling direction in snails is delayed a generation in its expression. The offspring of a snail are phenotypically the phenotype dictated by the genotype of the mother. Dextral curling (shell opens to the right) is dominant to sinistral curling (shell opens to the left). A cross between a homozygous sinistral female snail and a homozygous dextral male resulted in a sinistral female. If this F1 sinistral female is crossed to a homozygous sinistral male, what progeny phenotypes are expected?"

Answers

Answer: and Explanation:

coiling in snails is due to maternal effect genotype of the mother determines the phenotype of the offspring. F1 sinistral female is heterozygous let the alleles be D-dextral, d-sinistral so her genotype is Dd, so she can produce mRNA for both D and d alleles so both these mRNAs cn move into the egg, the egg can be either D or d but the egg contains mRNA of D allele so the egg hen fertilized by d sperm from homozygous sinistral male develops into dextral coiling offspring since the eggs from hich these snails developed had mRNA of allele D. so the answer is all dextral

List five item that can be found in a science portfolio

Answers

Answer:

A letter to the reader outlining each portfolio item
A list of term definitions that will be helpful to readers
A collection of individual goals for the year, selected and updated by students monthly, quarterly, etc.
Graphics—charts, concept diagrams, timelines, photographs, etc.—showing important data such as test scores
Book excerpts or quotations chosen by the student
A chart tracking every free-choice book a student has read that year
Reading logs
Photographs of students working
Anecdotal notes from one-on-one or small group time with students (e.g. guided reading notes)
Video recordings of readings or performances (for ePortfolios)
A sample paragraph of writing featuring a few key writing techniques
Sample essays of various types—descriptive, narrative, explanatory, expository, persuasive, cause and effect, and compare and contrast are all good options
Technical writing such as a process analysis essay featuring student-drawn diagrams
Creative writing samples, including stories, poems, songs, and scripts
A collection of graded math quizzes showing performance trends

Scientists construct an experimental bacteriophage that is composed of the T2 phage protein coat and T3 phage DNA. If a bacterium is infected by this phage, the new phages produced would be expected to have:

Answers

T4 protein and T4 DNA

Explanation:

A bacteriophage is an infection that attacks bacteria. At the point when the tail strands identify an objective host the bacteriophage to the cell, injected its DNA, and utilizations the microscopic organisms' apparatus to reproduce.
T4 is a sort of bacteriophage that infects of E. coli.
The bacteriophage T4 capsid is a prolonged icosahedron,120 nm long and 86 nm wide, and is worked with three essential proteins such as gp23*, which shapes the hexagonal capsid cross section, gp24*, which structures pentamers at eleven of the twelve vertices.
gp20, which frames the extraordinary dodecameric entry vertex through which DNA.
T4 DNA Ligase is ligation catalyst which utilized the parts of DNA by the catalyzing between compared 5'phosphate and 3' hydroxyl endsand phosphodiester bonds in the double stranded DNA utilizing ATP as a coenzyme.

A few organisms have evolved to use mostly asexual reproduction. what must be true about these?

Answers

I cannot find the statements, I will explain the asexual reproduction so you can answer the question by your own:

Asexual reproduction is as simple a cell multiplication as a photocopying machine reproduced in one or more copies an original document. In all cases, we obtain a clone of cells all having the same hereditary information.

The great advantage of asexual reproduction is its speed.
It produces a new organism that is genetically identical to the parent you do not have to look for a partner
Energy can be deployed to produce potentially large numbers of offspringOffspring are usually adapted to their environment by the success of their parent
Helps to quickly and effectively colonize a parent-friendly habitat, thanks to a large number of descendants he can breed in a short timeThe offspring are often already multicellular and more viable.

The inconveniences are:
Does not cause a genetic diversity of organisms of the same species.
The species does not adapt at all or very slowly depending on the changing circumstances.
There is only one parent to care for the offspring.
The parent disappears sometimes because his body is no more (binary fission, fragmentation).
An asexual species may be suddenly destroyed by a disaster that affects all genetically identical organisms of this species.

Which statement describes a feedback mechanism involving the human pancreas?1
The production of estrogen stimulates the formation of gametes for sexual reproduction.
2
The level of oxygen in the blood is related to heart rate
3
The level of sugar in the blood is affected by the amount of insulin in the blood
The production of urine allows for excretion of cell waste

Answers

The level of sugar in the blood is affected by the amount of insulin in the blood describes a feedback mechanism involving the human pancreas.

What is Pancreas?

This acts as an organ and a gland and is involved in the production of insulin which regulates sugar level in the blood.

It decreases the sugar level which is why option 3 was chosen as the most appropriate choice.

Read more about Pancreas here brainly.com/question/401066

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When I finally arrived at the meeting place, a crowd of folks was gathered around the fountain.Which word should replace folks in order to maintain a formal tone?
Select one:

fellas

people

guys

dudes