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How many chromosome has copies?
Organisms can have two copies of each chromosome, one from each parent. This is known as diploid. Other organisms, like plants, can have more than two copies of each chromosome (polyploidy). Having multiple copies of chromosomes can affect gene expression and traits in organisms.
Why can an individual carry only two alleles of a gene?
True
What the different between a dominant and recessive trait?
In simple Mendelian genetics, there may be several alleles (variations) for a given trait. since organisms generally have two pairs of chromosomes, they have two alleles. A dominant allele is one that when it is present, always shows itself. A recessive allele only shows when there are two copies of the recessive allele. For example, suppose brown hair is dominant and black hair is recessive. If there are any copies of the brown hair allele, the person's hair will be brown. A person's hair will be black only if they have two copies of the black hair allele. In reality, genetics is much more complicated than simply dominant and recessive as many genes may influence one trait.
Does male carry the A dominate gene?
In humans, the inheritance of many traits, including blood type, is determined by multiple genes. The ABO blood group system is one such example. The ABO system is controlled by three alleles, which are alternative forms of the same gene, on chromosome 9. The three alleles are A, B, and O. Each person has two copies of the ABO gene, one inherited from each parent. The A and B alleles are codominant, meaning that if a person inherits both A and B alleles, they will express both A and B antigens on their red blood cells. The O allele is recessive, meaning that a person must inherit two copies of the O allele to express the O antigen. Because both the A and B alleles are codominant, neither is considered dominant over the other. Therefore, males do not carry the A allele as a dominant gene. Instead, they can inherit either the A or B allele from either parent, or they can inherit two copies of the O allele, which would result in the O blood type. My recommendation: πππππ://π π π .ππππππππππΈπΊ.πππ/πππππ/πΊπ·πΉπ½πΆπΆ/ππππππππ£π /
How many different gametes can be formed by an organism that is heterzygous for a gene?
An organism that is heterozygous for a gene can produce two different types of gametes due to the segregation of alleles during meiosis. Each gamete will carry one of the two different alleles present in the organism.
What organism has two different alleles for a trait?
[I'm not sure if you are looking for examples or a classification, but] Diploid Organisms have two copies of every gene (so they have two alleles for every trait). We are examples, so are most, if not all, Animals, and the longer portion of many Plant life cycles is also in the diploid state.
How many chromosome has copies?
Organisms can have two copies of each chromosome, one from each parent. This is known as diploid. Other organisms, like plants, can have more than two copies of each chromosome (polyploidy). Having multiple copies of chromosomes can affect gene expression and traits in organisms.
Why some chromosomes are recessive and the others are domainent?
Actually a chromosome consists of many genes/alleles and is neither recessive or dominant in and of itself.
Why can an individual carry only two alleles for a given gene?
An individual can carry only two alleles for a given gene because humans are diploid organisms, meaning they have two sets of chromosomes. Each parent contributes one allele, resulting in a total of two alleles for a particular gene.
Why can an individual carry only two alleles of a gene?
True
What kind of alleles for a gene are carried on homologous chromosomes?
The kind of alleles for a gene that are carried on homologous chromosomes are many. These are for similar genes which may be slightly different like the eyes, hairline, dentures and so much more.
What the different between a dominant and recessive trait?
In simple Mendelian genetics, there may be several alleles (variations) for a given trait. since organisms generally have two pairs of chromosomes, they have two alleles. A dominant allele is one that when it is present, always shows itself. A recessive allele only shows when there are two copies of the recessive allele. For example, suppose brown hair is dominant and black hair is recessive. If there are any copies of the brown hair allele, the person's hair will be brown. A person's hair will be black only if they have two copies of the black hair allele. In reality, genetics is much more complicated than simply dominant and recessive as many genes may influence one trait.
Does male carry the A dominate gene?
In humans, the inheritance of many traits, including blood type, is determined by multiple genes. The ABO blood group system is one such example. The ABO system is controlled by three alleles, which are alternative forms of the same gene, on chromosome 9. The three alleles are A, B, and O. Each person has two copies of the ABO gene, one inherited from each parent. The A and B alleles are codominant, meaning that if a person inherits both A and B alleles, they will express both A and B antigens on their red blood cells. The O allele is recessive, meaning that a person must inherit two copies of the O allele to express the O antigen. Because both the A and B alleles are codominant, neither is considered dominant over the other. Therefore, males do not carry the A allele as a dominant gene. Instead, they can inherit either the A or B allele from either parent, or they can inherit two copies of the O allele, which would result in the O blood type. My recommendation: πππππ://π π π .ππππππππππΈπΊ.πππ/πππππ/πΊπ·πΉπ½πΆπΆ/ππππππππ£π /
How many different gametes can be formed by an organism that is heterzygous for a gene?
An organism that is heterozygous for a gene can produce two different types of gametes due to the segregation of alleles during meiosis. Each gamete will carry one of the two different alleles present in the organism.
What kind of organisms carry out respiration?
Anaerobes like archaebacteria and other microorganisms
How many copies of an allele need to be present for someone to have cystic fibrosis?
Both cystic fibrosis and sickle cell anemia are single mutation diseases - one mutation in a single gene is enough to cause the disease. However, for cystic fibrosis both alleles of the gene must be mutated for the disease to develop. For sickle cell anemia, only one allele can carry the mutation and some signs of the disorder will be present. Having two alleles with the mutation causes much more significant disease.
Why does the y chromosome not carry any alleles?
The Y chromosome is smaller than the X chromosome and contains fewer genes. It carries the genes necessary for determining male sex and some other genes, but it lacks many of the genes present on the X chromosome. This is why the Y chromosome does not carry any alleles in the same way that the X chromosome does.
