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What is a pair of replicated homologous chromosomes?
Those chromosomes having pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci are known to be homologous chromosomes. One homologous chromosome is inherited from the organism's mother; the other from the organism's father. They are usually not identical, but carry the same type of information.
Chromosomes can be classified by size and shape by what kind of test?
Chromosomes can be classified by size and shape using a technique called karyotyping. This involves staining the chromosomes to highlight their bands for analysis under a microscope. By examining the banding pattern, scientists can identify and classify chromosomes based on their size and shape.
What is the difference between Homologous chromosomes or homologues?
Homologous chromosomes are chromosome pairs of the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci. One homologous chromosome is inherited from the organism's mother; the other from the organism's father.[1]They pair (synapse) during meiosis, or cell division that occurs as part of the creation of gametes.Each chromosome pair contains genes for the same biological features, such as eye color, at the same locations (loci) on the chromosome. Each pair, however, can contain the same allele (both alleles for blue eyes) or different alleles (one allele for blue eyes and one allele for brown eyes) for each feature.i answered my own question... =p
What can karyotypes determine?
Determine whether the chromosomes of an adult have an abnormality that can be passed on to a child.Determine whether a chromosome defect is preventing a woman from becoming pregnant or causing miscarriages.Determine whether a chromosome defect is present in a fetus. Karyotyping also may be done to determine whether chromosomal problems may have caused a fetus to be stillborn.Determine the cause of a baby's birth defects or disability.Help determine the appropriate treatment for some types of cancer.Identify the sex of a person by determining the presence of the Y chromosome. This may be done when a newborn's sex is not clear.http://www.webmd.com/baby/karyotype-test
Description of chromosomes?
Chromosomes are thread-like structures made of DNA and proteins found in the nucleus of a cell. They contain the genetic information needed for cell growth, development, and functioning. In humans, chromosomes come in pairs, with one set inherited from each parent.
Two chromosomes that have the same lenght centromere position and staining pattern are called?
homologous chromosomes
A is a display of a cell's chromosomes which have been stained and organized into matching pairs based on their length centromere position and staining pattern?
That is a karyotype. It is a visual representation of an individual's chromosomes arranged in pairs based on their size, centromere position, and banding pattern, used to identify any chromosomal abnormalities or genetic disorders. Karyotyping is an important tool in genetic testing and clinical diagnosis.
What are 'homologous pairs' of chromosomes?
It means they are the same.Homologous chromosomes (also called homologs or homologues) are chromosome pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci. One homologous chromosome is inherited from the organism's mother; the other from the organism's father.
What is another name for a chromosome?
Homologous chromosomes are chromosome pairs of the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci. One homologous chromosome is inherited from the organism's mother; the other from the organism's father.[1]
What does a pair of homologous mean?
Those chromosomes having pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci are known to be homologous chromosomes. One homologous chromosome is inherited from the organism's mother; the other from the organism's father. They are usually not identical, but carry the same type of information.
What three characteristics of the chromosomes are the most useful in matching homologous pairs?
The most useful characteristics for matching homologous pairs of chromosomes are size, centromere position, and pattern of banding. Size refers to the length of the chromosome, centromere position is the location of the centromere on the chromosome, and banding patterns are unique patterns of light and dark bands that can be used to identify specific regions on the chromosome.
How can one determine the sex of a chromosome?
In a karyotype chromosomes are distinguished by number, size and centromere position. This is obtained by certain staining methods. The G method (geimsa staining) indicating the banding pattern of the chromosome by light and dark staining of the bands which are unique to each chromosome or by the Q method (quinicrine fluorescence) where bands indicate fluorescently that are Adenine and Thiamine rich. Other methods are the R method (reverse banding) where chromosomes are first heated before being geimsa stained and indicate in reverse to that of the G method, and the C method (centromeric heterochromatin) involving the staining of the centromere.
When do homologues pair?
A homologous pair is a pair of chromosomes that exist in diploid cells. One of the pair you inherit from your father, the other from your mother. A human has 22 pairs of homologous chromosomes (these do not include sex chromosomes). They are the same length and shape. They also share the same genes. The sequences of the genes may be different, which is what results in genetic variation, but the genes are the same.
What is shown in karotype?
A karyotype is a visual representation of an individual's chromosomes arranged by size, banding pattern, and centromere location. It can reveal the number of chromosomes present, any structural abnormalities, and gender of the individual.
What are the features used to identify homologous pairs of chromosomes?
Banding pattern – the size and location of Giemsa bands on chromosomes make each chromosome pair uniqueCentromere position – centromeres are regions in chromosomes that appear as a constriction. They have a special role in the separation of chromosomes into daughter cells during mitosis cell division
What is a pair of replicated homologous chromosomes?
Those chromosomes having pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci are known to be homologous chromosomes. One homologous chromosome is inherited from the organism's mother; the other from the organism's father. They are usually not identical, but carry the same type of information.
How do biologist make a karyotype?
Biologists make a karyotype by capturing chromosomes from a cell sample, arranging them by size, banding pattern, and centromere position, and then taking a picture of them under a microscope. This creates a visual representation of an individual's chromosomes, which can be used to identify chromosomal abnormalities or genetic disorders.
