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What are some human traits that are caused by multiple alleles?
Eye color, blood type, and skin color are human traits that are influenced by multiple alleles. In each case, there are more than two possible alleles that can determine the trait outcome in an individual.
What type of alleles are present in an organism?
Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.
How do dominate traits over power the recessive?
Dominant traits are expressed over recessive traits because the dominant allele codes for a functional protein that masks the effects of the recessive allele. In a heterozygous individual carrying one dominant and one recessive allele, the dominant allele is expressed, leading to the dominant trait being observed.
What must the genotype of an X-linked recessive trait be for a woman to express it?
If the woman does not show the trait, she must have a dominant allele (version of the gene); let's call it A. She also carries the recessive gene, a. So her genotype is Aa. This means that half her ova (gametes) will contain the dominant A, half a.The rest is up to the sperms; half of them will carry an X chromosome, with either A or a on it (unless there are more than two alleles involved).
What two types of gamete is made from genotype Aaaa?
The genotype Aaaa can produce two types of gametes: A and a. During gamete formation, the alleles segregate, resulting in gametes that contain either the dominant allele A or the recessive allele a. Therefore, the two possible gametes are A and a.
Whether an allele is dominant or recessive depends on?
its random really, some genes are recessive, and some are dominant if a gene is dominant than it will be expressed if it is present the only way for a recessive gene to be expressed is if there are two alleles for that traitIt's not random at all. There can be many reasons. One classic reason is given here. First, know that most genes encode proteins. A dominant gene (really, an allele) may encode for a functional protein while a recessive gene may encode for a non-functional proteindominant genes contain genes that are strong and recessive genes contain genes that are weak.
What is the probability that an egg cell from a female with genotype RR will contain the recessive allele?
Zero. If it's RR that means it only contains the dominant allele
How do genes and alleles interact to determine an individual's traits?
Genes are segments of DNA that contain instructions for making proteins, which determine traits. Alleles are different forms of a gene that can result in variations in traits. The combination of alleles inherited from parents determines an individual's traits through processes like dominant and recessive inheritance.
What is it called When the two gametes that fuse to form a zygote contain different alleles of a given gen?
The zygote is heterozygous for that gene. Which ever one of the genes of the parents is dominant, then the zygote has that gene, but also carries the recessive trait from the other parent.
What are some human traits that are caused by multiple alleles?
Eye color, blood type, and skin color are human traits that are influenced by multiple alleles. In each case, there are more than two possible alleles that can determine the trait outcome in an individual.
What type of alleles are present in an organism?
Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.
What type allele are present in an organism with a QQ genotype?
Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.
How do dominate traits over power the recessive?
Dominant traits are expressed over recessive traits because the dominant allele codes for a functional protein that masks the effects of the recessive allele. In a heterozygous individual carrying one dominant and one recessive allele, the dominant allele is expressed, leading to the dominant trait being observed.
What is heterozygouz?
Many organisms contain two copies of each chromosome, and generally these two chromosomes are not identical. If a particular trait, such as the shape of a pea, is determined by one particular section of a chromosome, it is possible for the two copies of the chromosome to have different instructions for the trait. If the two sections of the two chromosomes have different instructions, this is called being heterozygous.Often if an organism is heterozygous for a trait, one of the sets of instructions (called an allele) will be dominant over the other. This means that if either of the chromosomes has that dominant version of the allele, that is the set of instructions that will be followed.Examples: The gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and the other for wrinkled seed shape (r). A heterozygous plant would contain the following alleles for seed shape: (Rr).Organisms have two alleles for each trait. When the alleles of a pair are heterozygous, one is dominant and the other is recessive. Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive. Round: (RR) or (Rr), Wrinkled: (rr).
What must the genotype of an X-linked recessive trait be for a woman to express it?
If the woman does not show the trait, she must have a dominant allele (version of the gene); let's call it A. She also carries the recessive gene, a. So her genotype is Aa. This means that half her ova (gametes) will contain the dominant A, half a.The rest is up to the sperms; half of them will carry an X chromosome, with either A or a on it (unless there are more than two alleles involved).
What two types of gamete is made from genotype Aaaa?
The genotype Aaaa can produce two types of gametes: A and a. During gamete formation, the alleles segregate, resulting in gametes that contain either the dominant allele A or the recessive allele a. Therefore, the two possible gametes are A and a.
What is an organism with one dominant and one recessive gene for a trait?
An organism with one dominant and one recessive gene for a trait is called a heterozygote. In this case, the dominant gene will be expressed in the organism's phenotype, while the recessive gene will not be expressed unless the organism inherits two copies of the recessive gene.
