Asked by: Bihotza Schirp
science genetics

What is the function of P arm?

Last Updated: 14th May, 2020

43
The "p" comes from the French "petit" meaning small. All human chromosomes have 2 arms - the p (short) arm and the q (long) arm - that are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the spindle during cell division.

Click to see full answer.

Simply so, what is the main function of chromosome?

Chromosomes are often referred to as the 'packaging material' that hold DNA and proteins together in eukaryotic cells (cells that have a nucleus). Cell division is a continuous process that must occur for an organism to function, whether for growth, repair, or reproduction.

Beside above, what is chromosome and its function? The Function of Chromosomes. Chromosomes are the thread-like structure found in the nuclei of both animal and plant cells. They are made of protein and one molecule of deoxyribonucleic acid (DNA). Chromosomes are important to this process to ensure the DNA is accurately replicated.

Also question is, what is the difference between the p arm and the Q arm of a chromosome?

The arm of the chromosome. Each chromosome is divided into two sections (arms) based on the location of a narrowing (constriction) called the centromere. By convention, the shorter arm is called p, and the longer arm is called q. The chromosome arm is the second part of the gene's address.

What does P and Q stand for in chromosomes?

The chromosome number. p. The position is on the chromosome's short arm (a common apocryphal explanation is that the p stands for petit in French); q indicates the long arm (chosen as next letter in alphabet after p; alternatively it is sometimes said that q stands for queue, meaning "tail" in French).

Related Question Answers

Giga Rojo

Professional

Where is chromosome located?

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.

Antonela Pendon

Professional

How is chromosome formed?

The chromosomes of a eukaryotic cell consist primarily of DNA attached to a protein core. They also contain RNA. DNA wraps around proteins called histones to form units known as nucleosomes. These units condense into a chromatin fibre, which condenses further to form a chromosome.

Matias Scheibel

Professional

What are the two functions of chromosomes?

Chromosomes are essential for the process of cell division, replication, division, and creation of daughter cells. Chromosomes are often called the 'packaging material' because it tightly holds the DNA and proteins together in the eukaryotic cells.

Zoumana Zhongolovich

Explainer

What is chromosome and its structure?

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Asela Kala

Explainer

What is chromosome in human body?

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.

Jenny Unda

Explainer

Who discovered chromosome?

Karl Wilhelm von Nägeli

Marcell Colunga

Pundit

Which are the two main parts that make up a chromosome?

The chromosome consists of a single chromatid and is decondensed (long and string-like). The DNA is copied. The chromosome now consists of two sister chromatids, which are connected by proteins called cohesins.

Sharika Fornet

Pundit

What is the function of vacuole?

Vacuoles are membrane-bound sacs within the cytoplasm of a cell that function in several different ways. In mature plant cells, vacuoles tend to be very large and are extremely important in providing structural support, as well as serving functions such as storage, waste disposal, protection, and growth.

Tula Gui

Pundit

What are the P and Q arms?

The "p" comes from the French "petit" meaning small. All human chromosomes have 2 arms - the p (short) arm and the q (long) arm - that are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the spindle during cell division.

Coulibaly Alfonsin

Pundit

What is Edward's syndrome?

Edwards syndrome, also known as trisomy 18, is a genetic disorder caused by the presence of a third copy of all or part of chromosome 18. Many parts of the body are affected. Babies are often born small and have heart defects.

Mohsine Musalnikov

Pundit

When there is no P arm and only q arm the chromosome is called?

Medical Definition of q arm of a chromosome
By international convention, the short arm is termed the "p arm" while the long arm of the chromosome is termed the "q arm." Trisomy (an extra copy) of part of 21q (the long arm of chromosome 21) causes Down syndrome.

Christy Hochdorffer

Teacher

Is Q The long arm?

Long arm of a chromosome: The long arm of a chromosome is termed the q arm. All human chromosomes have 2 arms, the p (short) arm and the q (long) arm. They are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the spindle during cell division.

Benat Espasa

Teacher

What is a centromere made of?

Centromeres are made up of repeating DNA sequences. In higher eukaryotes, like humans, centromeres are made up of long stretches of repeating DNA sequences called alpha satellite sequences.

Duaa Birentsveig

Teacher

Where is heterochromatin found?

Heterochromatin is usually localized to the periphery of the nucleus.

Kristoffer Cholbi

Reviewer

What is the process of meiosis?

Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.

Xandre Lotze

Reviewer

What is genomic position?

Genomic Location. The Genomic Location section specifies the physical location of a gene on a genome or chromosome. It provides the following information: Chromosome (Protozoan Parasite Only): the chromosome on which the gene is identified, e.g. XI Genbank. Sequence: a hyperlink to the nucleotide sequence of a gene.

Niama Zehar

Reviewer

What is an example of a chromosome?

noun. The definition of a chromosome is a thread-like structure of DNA (nucleic acids and proteins) that carries genes. The "X" or "Y" gene that determines whether you will be a boy or a girl is an example of a chromosome.

Sakira Rulfing

Reviewer

What do you mean by chromosome?

A chromosome is a strand of DNA that is encoded with genes. In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) for a total of 46. The word chromosome was originally coined in German from the Greek words khroma, meaning color, and soma meaning body.

Ohiana Arrascaeta

Supporter

What is chromosomes in simple words?

The chromosomes of a cell are in the cell nucleus. They carry the genetic information. Chromosomes are made up of DNA and protein combined as chromatin. Each chromosome contains many genes. Cytologists label chromosomes with numbers.

Co-Authored By:

EveryThingWhat Staff Editor

3

14th May, 2020

36

95% of readers found this page helpful.

4.7/5

Click a star to add your vote

Similar Asks
Trending