0
How can a muscle cell and a nerve cell be so different if they both contain the exact same set of chromosomes?
From my projects, (keep in mind I'm fresh out of high school Biology) it's because of cell differentiation! The body creates stem cells which are cells with nothing special about them. These cells then change into the type of cell they see that they need to be through differentiation.
(this may be the direct answer to the question but it doesn't hurt to know about stem cells)
Different types of cells build protein for specific subsets of the DNA. The muscle cells, for example, understand that they're muscle cells and the ribosomes make the protein needed to specifically make muscles. For example:
FF - muscle
Qq - nerve
YY - nerve
pp - muscle
ll - nerve
If a stem cell were to change to a nerve cell, it would code for I y and q. However, if they were muscle cells, the ribosomes would code for r and f.
What else can I help you with?
How many chromosomes do birds have?
Nearly each species of bird has its own unique number of chromosomes. It can be very difficult to determine the exact number because many of these chromosomes are highly fragmented into multiple 'microchromosomes.' In short, the answer is: "It depends..."
How many chromosomes do snakes have?
Snakes have 74. The amount of Chromosomes may vary with different species of snakes.
When the chromosomes make an exact copy of themselves what are they then called?
When chromosomes make an exact copy of themselves, they are called sister chromatids. Sister chromatids are identical copies of a chromosome that are held together by a structure called the centromere.
Compare the numbers of chromosomes in different species?
Humans have 46 chromosomes (23 pairs), fruit flies have 8 chromosomes, dogs have 78 chromosomes, and turtles have 50 chromosomes. The number of chromosomes can vary widely among different species and does not necessarily correspond to complexity or evolutionary advancement.
What percentage of DNA do you share with dogs?
Humans and dogs only share about 25% of the exact same DNA or genome sequence. They also have a different number of chromosomes. Humans have 23 pairs of chromosomes and dogs have 39 pairs.
How many chromosomes do birds have?
Nearly each species of bird has its own unique number of chromosomes. It can be very difficult to determine the exact number because many of these chromosomes are highly fragmented into multiple 'microchromosomes.' In short, the answer is: "It depends..."
Are sister chromatids or homologous chromosomes more similar?
Sister chromatids are more similar to each other because they are exact copies of each other formed during DNA replication. Homologous chromosomes, on the other hand, are pairs of chromosomes that contain genes for the same traits, but may have different versions of those genes.
Which cells contain two sets of chromosomes?
A diploid cell is sometimes described as having two identical sets of chromosomes.This is because for each copy of a chromosome, such as chromosome 7, there is one other copy of the same chromosome.However, such a pair, known as homologous chromosomes, are not truly identical, as they do not have identical base sequences. At any given locus (point on the chromosome) there will be the same type of information, such as a gene, transcription factor, or repeating sequence. But the exact form (allele) will in many cases be different on the two homologous chromosomes.
What is the exact length of DNA in a human body?
Each pair of chromosomes has a different length, so that question can't be answered.
How many chromosomes do snakes have?
Snakes have 74. The amount of Chromosomes may vary with different species of snakes.
How many chromosomes does each new cell contain after mitosis if the original cell had 52 original cell chromosomes?
They would each have 52. When a cell divides through mitosis, it copies the original chromosomes, pulls them apart so that there is a copy of the same set of chromosomes on each side of the cell, then divides. The original set of chromosomes will always be the exact same set as the daughter cell's set of chromosomes (unless something went horribly wrong.) -if you are on a worksheet called "Section 1 Reinforcement - Cell Division and Mitosis" for number 8, I'm in the same situation...
When the chromosomes make an exact copy of themselves what are they then called?
When chromosomes make an exact copy of themselves, they are called sister chromatids. Sister chromatids are identical copies of a chromosome that are held together by a structure called the centromere.
Compare the numbers of chromosomes in different species?
Humans have 46 chromosomes (23 pairs), fruit flies have 8 chromosomes, dogs have 78 chromosomes, and turtles have 50 chromosomes. The number of chromosomes can vary widely among different species and does not necessarily correspond to complexity or evolutionary advancement.
What percentage of DNA do you share with dogs?
Humans and dogs only share about 25% of the exact same DNA or genome sequence. They also have a different number of chromosomes. Humans have 23 pairs of chromosomes and dogs have 39 pairs.
When chromosomes make an exact copy of themselves?
Interphase :D
What is the process called when an exact copy of the chromosomes is made?
Meiosis
What is mirroring chromosomes?
Mirroring chromosomes are a genetic abnormality. This abnormality is caused by an exact duplication of a chromosome segment, including the centromere.
