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The role of the gene, simply put, is to replicate itself without making mistakes. Mutations are when the gene makes mistakes. Geneticists tell us that each generation has over 100 mutations than the previous generation. In other words, you have 100 more mutations than your parents, and your parents have 100 more mutations than their parents, and so on. As far as new species, you should look at Mendel's experiments with peas. He bred the colors out until they no longer able to pass on a particular color that was there in the original pea. The same hold true with dogs, or other animals like horses. You start out with a dog that has genes for long, short, and medium hair; as well as a variety of colors such as brown, black, and white. You breed the dogs until you get the black and brown out and you are left with an all white dog. You do the same with the long hair, medium hair, and short hair. When you get a dog that repeats the same color for several generations, you can feel confident that the other traits are gone. Then you can call that a 'Pure Bred' dog with some new dog name such as Samoyed. No new information has ever entered into the animal, it just lost information and it will never return unless, it is mated with another dog that has the original information. The same goes with the horse, zebra, donkey, etc. Information was separated out and you end up with various color blends, sizes, etc. New species are formed by losing information. There has never been a gain of information that never existed before that just popped up in any species.
Andy
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What role do genetic factors play in causing birth defects?
Genetic factors can play a significant role in causing birth defects when there are alterations or mutations in the baby's DNA that affect normal development. These genetic changes may be inherited from the parents or arise spontaneously. Factors such as chromosomal abnormalities, gene mutations, and variations in gene expression can all contribute to the development of birth defects.
Is it true that mutations can increase the variations in a species trait?
Yes, mutations can increase the variations in a species' traits by introducing new genetic variations into the gene pool. These changes can affect physical characteristics, behaviors, or physiological processes. While many mutations may be neutral or harmful, some can confer advantages that enhance survival and reproduction, contributing to evolutionary changes over time. Therefore, mutations play a crucial role in the adaptability and diversity of species.
What is the function of the KRAS gene?
The K-ras (perhaps sometimes called the KRAS) gene is an oncogene which activates mutations that will play a key role in diseases such as lung, colorectal, and pancreatic cancer.
What gene is a male gene called?
The gene that determines male biological traits is called the SRY gene, which is located on the Y chromosome. This gene plays a crucial role in the development of male sex characteristics during embryonic development.
What is an example of a regressive gene?
An example of a regressive gene is the Sonic hedgehog (Shh) gene, which plays a crucial role in embryonic development and patterning. In certain species, such as cave-dwelling fish, the Shh gene has undergone changes that result in the loss of eye development, demonstrating a regression in function due to adaptation to dark environments. This loss of function can be considered regressive as it reflects an evolutionary shift away from traits that are no longer beneficial in a specific habitat.
What is the role of the MMDA1 gene in cellular function and disease development?
The MMDA1 gene plays a crucial role in regulating cellular processes and maintaining cell health. Mutations in this gene can lead to dysfunction in cellular activities, potentially contributing to the development of certain diseases.
What is the sry gene?
The SRY gene, also known as the sex-determining region Y gene, plays a critical role in the development of male characteristics in mammals. It is located on the Y chromosome and is responsible for initiating the development of the male reproductive system during embryogenesis. Mutations or abnormalities in the SRY gene can lead to disorders of sex development.
What role do genetic factors play in causing birth defects?
Genetic factors can play a significant role in causing birth defects when there are alterations or mutations in the baby's DNA that affect normal development. These genetic changes may be inherited from the parents or arise spontaneously. Factors such as chromosomal abnormalities, gene mutations, and variations in gene expression can all contribute to the development of birth defects.
Is it true that mutations can increase the variations in a species trait?
Yes, mutations can increase the variations in a species' traits by introducing new genetic variations into the gene pool. These changes can affect physical characteristics, behaviors, or physiological processes. While many mutations may be neutral or harmful, some can confer advantages that enhance survival and reproduction, contributing to evolutionary changes over time. Therefore, mutations play a crucial role in the adaptability and diversity of species.
What is the genetic trace of 'CHARGE' syndrome?
Charge syndrome is genetic. Mutations in a new member of the chromodomain gene family cause CHARGE syndrome. This syndrome is a common cause of congenital anomalies affecting several tissues in nonrandom fashion. Some research has been shown that detected mutations are in the gene CHD7 in 10 of 17 individuals with CHARGE syndrome that didn't have microdeletions, accounting for the disease in most affected individuals.
What is the function of the FMR-1 gene?
This gene is located on the X chromosome. The FMR-1 gene is thought to play an important role in the development of the brain, but the exact way that the gene acts in the body is not fully understood.
How can a virus play an active role in the evolution of their host species?
Inter-species gene transfer.
What factors influence how species evolve?
Factors that influence how species evolve include natural selection, genetic drift, gene flow, and mutations. These processes can lead to changes in the gene pool of a population over time, resulting in the evolution of new traits and eventually the formation of new species. Environmental factors, such as climate change and competition for resources, also play a significant role in shaping the direction of evolution.
What role does the gene labeled as "BRCA1" play in the development of breast cancer?
The gene BRCA1 helps repair damaged DNA in cells, which can prevent the growth of abnormal cells that could lead to breast cancer. Mutations in the BRCA1 gene can increase the risk of developing breast cancer because the cells may not be able to repair DNA damage properly.
What is the function of the KRAS gene?
The K-ras (perhaps sometimes called the KRAS) gene is an oncogene which activates mutations that will play a key role in diseases such as lung, colorectal, and pancreatic cancer.
What gene causes ataxia-telangiectasia?
mutations in a single large gene were identified as causing A-T. Researchers named the gene ATM for A-T, mutated. Subsequent research revealed that ATM has a significant role in regulating cell division
What is a misspelled gene?
A misspelled gene refers to a gene that has mutations or alterations in its DNA sequence, which can lead to incorrect protein production or function. These changes can be due to various factors such as point mutations, insertions, or deletions. Such alterations can result in genetic disorders or contribute to disease susceptibility, as the altered protein may not perform its intended biological role effectively.
