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Chromosomes
Chromosomes contain the genetic material DNA
1,309 Questions
How many chromosome do congenital adrenal hyperplasia have?
The same number as any other human as the condition is not caused by the absence of an entire chromosome. 90% of cases are caused by an autosomal recessive of the CYP21 allele. So far there are at least 56 identified variations at this site that can cause the many variations of CAH.
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Two chromosomes are homologous if they have the same genes at the same loci (position). In a homologous pair, there is one chromosome from the mother (maternal) and one from the father (paternal).
How many chromosomes in diploid cells in a monkey?
Diploid cells in monkeys typically contain 42 chromosomes. This number can vary among different species of monkeys, but for the common macaque, for example, the diploid chromosome number is 42. Each diploid cell has two sets of chromosomes, one inherited from each parent.
What two discrete ingredients make a chromosome?
A chromosome is primarily made up of two discrete ingredients: DNA and proteins. The DNA molecule contains the genetic information, while proteins, especially histones, help package and condense the DNA into a compact structure, allowing it to fit within the cell nucleus. Together, these components form the chromatin that constitutes chromosomes during cell division.
Why do abnormalities tend to be milder in x chromosomes?
Abnormalities tend to be milder on X chromosomes because of the phenomenon known as X-inactivation, where one of the two X chromosomes in females is randomly inactivated, leading to a "dilution" of the effects of mutations. Additionally, many genes on the X chromosome are present in two copies in females (XX) and only one in males (XY), allowing for a backup copy that can compensate for deleterious mutations. This dosage effect often results in milder phenotypic expressions of X-linked abnormalities in females compared to males.
Do asexual organisms have chromosomes?
Humans have 46 chromosomes, 23 from each parent. Out of those 46, two are the ones that define the individual's sex. The rest of chromosomas have no relation with detrmining the individual sex and that is why the may be called asexual chromosomes. S.V.
What statement best applies to chromosomes?
Chromosomes are structures within cells that organize and store genetic information in the form of DNA. Each chromosome consists of a single, long DNA molecule wrapped around proteins called histones, which help to compact and manage the DNA's structure. Humans typically have 46 chromosomes, arranged in 23 pairs, with one set inherited from each parent, playing a crucial role in heredity, cell division, and overall cellular function.
What is the number chromosomes in sparrow?
Sparrows have a total of 40 chromosomes, which are organized into 20 pairs. This chromosomal count is typical for many species in the family Passeridae, to which sparrows belong. Chromosomes carry genetic information crucial for the development and functioning of the organism.
What is the chromosome number at the beginning and end of mitosis?
At the beginning of mitosis, a cell has a diploid chromosome number, which means it contains two sets of chromosomes (one from each parent). For example, in humans, this number is 46 chromosomes. By the end of mitosis, each daughter cell also has the same diploid chromosome number, maintaining the genetic consistency across the cells. Therefore, both the parent cell and the two daughter cells each have 46 chromosomes.
