There are 3 sub atomic particles in an atom namely electron, proton, neutron. The charged species is known as ion.
What does resting potential mean
the electrical potential of a neuron or other excitable cell relative to its surroundings when not stimulated or involved in passage of an impulse.
If a cell in a fruit fly's wing contains 8 chromosomes, then its gametes contain
There are 4 chromosomes in its haploid gametes.
All gametes are haploid cells. Haploid cells are those that have only one set of chromosomes, represented by the letter n, as they have half of the diploid cell chromosomes. Diploid cells, in turn, are those represented by the letter 2n. In this case, if a cell on the wing of a fruit fly contains 8 chromosomes, then its gametes, which are haploid cells, contain 4 chromosomes.
Reproduction of haploid cells occurs in meiosis. It is at this time of cell division that diploid cells divide and form haploid cells.
Gametes have half chromosomes so that when they unite in fertilization, they are doubled and thus have the number of chromosomes an organism must have. Thus, gametes only perform their function when they find the gamete of the opposite sex to complete the genetic burden.
divide by 2.
. The type of _______ found in oats, barley, lentils, split peas, and beans protects against heart disease.
A. soluble fiber
B. LDL cholesterol
C. insoluble fiber
Answer: Soluble Fiber.
The foods such as barley. lentils, beans and split peas have soluble fibers in them. This fiber helps in protecting the body against cardiovascular diseases.
Soluble fiber binds with the fatty acid and slows down the time taken by the stomach to empty.
It also helps in reducing cholesterol , especially Low density lipoproteins. It also maintains the level of sugar in body.
Explain how DNA replication differs in prokaryotic and eukaryotic cells?
In prokaryotic cells, there is only one point of origin, replication occurs in two opposing directions at the same time, and takes place in the cell cytoplasm. Eukaryotic cells on the other hand, have multiple points of origin, and use unidirectional replication within the nucleus of the cell.
What are citrus fruits?
1. Fingerprints may be resolved into three large, general groups of patterns: the arch, the loop, and the ____. a. bulbs.
2. In 1990, the FBI began a pilot project called _____, which stores DNA profiles from across the country in a series of local, state, and national databases, all linked via computers.
3. Impressions produced by the ridged skin on human fingers, palms, and soles of the feet are _____ prints.
4. What is the most commonly used facial composite software in the United States?
b. Identi-Kit 2000
5. What is the most significant breakthrough in forensic science since the development of fingerprinting?
a. ballistics tests
b. handwriting analysis
c. DNA profiling
d. investigative psychology
6. What is the process of identifying psychological and social characteristics surrounding the crime as well as the manner in which it was committed?
a. psychological profiling
b. criminal investigative analysis
c. investigative psychology
d. case linkage
7. DNA typing was first described in 1985 by English geneticist
a. James Watson.
b. Edward Southern.
c. Francis Crick.
d. Alec Jeffreys.
8. crime lab’s DNA analysis unit examination and characterization of body fluid is conducted through __________ serological techniques.
9. MitoSearch is a software package used by crime labs to compile and analyze
a. the mtDNA database.
b. criminal histories.
c. arms and ammunition
d. ink and print traces.
10. Two standards have been used to govern the admission of scientific evidence: the _____ test and the Frye test.
b. Daubert Standard
d. reliability prong
1. According to Health, U. S., 1993: The Annual National Report on Health, the right answer is normally the whorl but it's not mentionned in the propositions.
2. The right answer is CODIS
Combined DNA Index System (CoDIS) is the US national database, created and maintained by the FBI. The CoDIS comprises three levels of information: local DNA index systems (LDIS) where the genetic profiles originate, state DNA index systems (SDIS) that allow laboratories in the same state to share information, and the index system of national DNA (NDIS) that allows states to compare information between them.
3. The right answer is latent prints.
Latent fingerprints are accidental fingerprints left by the skin on a surface, whether visible or invisible at the time of deposit.
Treatment techniques can visualize invisible latent print residues, whether from natural transpiration of the skin or from a contaminant in the blood.
4. The right answer is FACES.
The composite facial is a judicial investigation tool that represents the most likeable portrait possible of the face of a wanted person. It is established from testimonials.
5. The right answer is DNA profiling.
A genetic fingerprint, or genetic profile, is the result of a genetic analysis, making it possible to identify a person from a small amount of their biological tissues (hair bulb, blood, saliva, vaginal secretion, sperm).
6. The right answer is Criminal Investigative Analysis.
Criminal analysis is a method of analysis and investigation in the criminal field based on the use of new technologies (computer science). Criminal analysis distinguishes itself from behavioral analysis (criminal profiling).
Criminal analysis is a method that emerged in the US in the 1960s in the context of the fight against organized crime. This technique allows investigators to create links between elements (individuals, events, places, relationships ...), to structure and prioritize these elements (graphics, maps ...).
7. The right answer is Alec Jeffreys.
Sir Alec John Jeffreys (born January 9, 1950 in Luton, Bedfordshire) is a British geneticist who has developed genetic fingerprinting techniques.
8. The right answer is traditional.
DNA forensic analysis, commonly known as DNA analysis, is less than 10 years old. However, basic science dates back to at least 1953, when two young researchers from Cambridge University, James Watson and Francis Crick, discovered the molecular structure of DNA.
9. The right answer is the mtDNA database.
Unlike nuclear DNA, mitochondrial DNA does not contain repetitive sequences and inter-individual variations are sometimes visible on a single nucleotide. The polymorphism of the mitochondrial DNA is thus a polymorphism of structure (and not of repetition as that of the nuclear DNA).
Forensic analysis is performed on these polymorphisms present in a non-coding region called control region (also called D-loop). The two most variable portions of the control region (HV1 and HV2) are amplified by PCR and then detailed.
10. The right answer is revelancy test.
The revelation test allows to disclose something that was invisible or unnoticed before.
An aquatic food web consists of phytoplankton → krill → seals → sharks. The removal of which component is MOST LIKELY to cause an immediate impact on the food web? a.phytoplanktonB)krillC)sealsD)sharks
All organisms need energy which they derive by naturally feeding on one another in a series of chain called FOOD CHAIN. The food chain can form a more complex interrelated series called FOOD WEB. All food chains and webs starts with a set of unique organisms called PRODUCERS.
Producers are autotophs that produce their own food via the process of photosynthesis. They are the only set of organisms that have the ability to tap the energy from the sun, which then flows in the food chain as organisms feed on one another.
Phytoplanktons are aquatic producers, hence, they photosynthesize in water. The food chain will be immediately affected if the phytoplanktons (producers) are removed from the food web because there will be no organism to start the energy flow.
The nurse instructs a pregnant woman in labor that she must avoid lying on her back. the nurse bases this instruction on the information that the supine position is primarily avoided because it can do what?
PLS HELP ME. WILL GIVE BTAINLIEST
what are two different homeostatic mechanism