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How does meiosis ensure that each reproductive cells cells only gets gets one gene for each trait?
Meiosis is a two-step division process that results in four daughter cells, each containing half the number of chromosomes as the parent cell. This ensures that each reproductive cell only receives one gene for each trait because the genetic material is randomly separated in the first division and then segregated in the second division, leading to genetic diversity in the offspring.
Mendel's theory says that an offspring never gets both trait-controllers from the same parent which of his laws state this?
Mendel's Law of Segregation states that each parent contributes only one allele for each trait to their offspring, and these alleles segregate during gamete formation. This means that offspring do not receive both trait-controlling alleles from the same parent.
How are recessive trait inherited?
What is the relationship between dominant and recessive traits? Think of it this way-- A dominant gene will suppress the expression of a recessive gene. A dominant trait is the expressed result of an organism having either one dominant and one recessive gene for that trait, OR two dominant genes for that trait. For example, brown eye color is normally dominant over blue. A recessive trait is the expressed result of having two recessive genes. For example, you need two recessive genes to get blue eyes. Each parent contributes one gene for each trait. If a parent carries a recessive gene for blue and a dominant gene for brown, that parent will have brown eyes, but can contribute either gene to a child. If the other parent has the same, the child could have two brown eyed parents but have blue eyes. Eye color is a visible trait, but each gene location can be or contribute to a trait not visible to the eye. For example, the genetic disposition to ovarian cancer is not something we can see without genetic testing. A recessive gene can be inherited and remain silent for generations, waiting to pair up with another recessive to be expressed. The knowledge that this does occur is one of the reasons why genetic testing is recommended before having children. There are so-called lethal genes that are recessive and only become problematic when they meet up with another. I know I have simplified things here, but I hope that gets to the core of your question. I recommended taking a look at the OMIM.org website to appreciate how complex this really is. That the unraveling of the miracle of the human genome has been accomplished during the last decade is truly wonderful.
In which step would a mutation lead directly to the formation of an altered gene -?
DNA is copied and each new cell gets a full copy.
A child is diagnosed with a rare genetic disease neither parent has this disease how was the disorder inherited?
Recessive is carried by both parentsIn simplest terms, the disease is recessive, so two copies of the gene that cause it are necessary. Both parents have only one copy of the gene, so, they don't have it, but are carriers. A child gets half his or her genes from each parent. If the child gets the bad gene from each parent, the child will have the disease. There is a 25% chance of this happening with every child these parents have.
Each gamete gets one gene from each trait?
In meiosis, each gamete receives one allele for each gene, ensuring genetic diversity and random assortment of traits in offspring. This process helps create unique combinations of genes in gametes, leading to variability in traits among individuals.
What is the physical trait that gets expressed by a gene pair?
the dominant gene
How does meiosis ensure that each reproductive cells cells only gets gets one gene for each trait?
Meiosis is a two-step division process that results in four daughter cells, each containing half the number of chromosomes as the parent cell. This ensures that each reproductive cell only receives one gene for each trait because the genetic material is randomly separated in the first division and then segregated in the second division, leading to genetic diversity in the offspring.
Mendel's theory says that an offspring never gets both trait-controllers from the same parent which of his laws state this?
Mendel's Law of Segregation states that each parent contributes only one allele for each trait to their offspring, and these alleles segregate during gamete formation. This means that offspring do not receive both trait-controlling alleles from the same parent.
Because the zygote gets half of its gentic code from each gamete the human offspring?
results in the 46 chromosomes that we have?
Name two factors that determine the phenotype of a trait?
genes
Why does a gamete only contain 23 in the human body?
You get the other 23 from the opposite sex. The semen and the egg combines and gets 46 chromosomes. If each gamete contained 46 chromosomes, the zygote would contain 92 chromosomes.
When a trait has more than two alleles is that trait inherited?
If one parent has a dominant trait and and another parent has a recessive trait, then the recessive trait gets hidden while the dominant trait gets shown.
Mendel's Law of Segregation and Recombination says that?
Mendel's Law of Segregation states that during the formation of gametes, the two alleles for a gene segregate from each other so that each gamete carries only one allele. Mendel's Law of Recombination states that alleles of different genes are inherited independently of one another through the process of genetic recombination.
How are recessive trait inherited?
What is the relationship between dominant and recessive traits? Think of it this way-- A dominant gene will suppress the expression of a recessive gene. A dominant trait is the expressed result of an organism having either one dominant and one recessive gene for that trait, OR two dominant genes for that trait. For example, brown eye color is normally dominant over blue. A recessive trait is the expressed result of having two recessive genes. For example, you need two recessive genes to get blue eyes. Each parent contributes one gene for each trait. If a parent carries a recessive gene for blue and a dominant gene for brown, that parent will have brown eyes, but can contribute either gene to a child. If the other parent has the same, the child could have two brown eyed parents but have blue eyes. Eye color is a visible trait, but each gene location can be or contribute to a trait not visible to the eye. For example, the genetic disposition to ovarian cancer is not something we can see without genetic testing. A recessive gene can be inherited and remain silent for generations, waiting to pair up with another recessive to be expressed. The knowledge that this does occur is one of the reasons why genetic testing is recommended before having children. There are so-called lethal genes that are recessive and only become problematic when they meet up with another. I know I have simplified things here, but I hope that gets to the core of your question. I recommended taking a look at the OMIM.org website to appreciate how complex this really is. That the unraveling of the miracle of the human genome has been accomplished during the last decade is truly wonderful.
What type of gene gets blockedout?
Junk DNA gene
In which step would a mutation lead directly to the formation of an altered gene -?
DNA is copied and each new cell gets a full copy.
