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What are cells that contain two different alleles for a gene one dominant and one recessive?
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∙ 12y ago
Heterozygous
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∙ 12y ago
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What are some human traits that are caused by multiple alleles?
The heredity of the ABO blood groups are governed by multiple alleles.
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 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 did Mendel learn about genetics from studying peapods?
Mendel learned from the study of peapods the basis for recessive and dominant gene composition as well as the cell of a plant can contain two different traits but not both traits.
How do dominate traits over power the recessive?
dominates it (you get the dominant form)
What are some human traits that are caused by multiple alleles?
The heredity of the ABO blood groups are governed by multiple alleles.
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 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 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.
What are chromosomes that contain genes which code for the same traits?
Yes they do, but these genes may be both dominant, both recessive or one dominant and its counterpart on another chromosome recessive.
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 is an organism with one dominant and one recessive gene for a trait?
that organism is a heterozygous one which contain the traits of recessive as well as dominant genes.
What are the basic principles of Mendelian genetics?
- Inheritance of biological characteristics is determined by genes, which are passed from parents to their offspring - In cases of two or more forms (alleles) of the gene for a single trait exist some forms of the gene may be dominant and others may be recessive - Most sexually reproducing organisms, each adult has two copies of each gene-one from each parent. These genes are segregated from each other when gametes are formed - The alleles for different genese usually segregate independently of one another
How will a sex linked recessive trait on the X chromosome be transmitted if the woman has the gene but not the trait?
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 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 did Mendel learn about genetics from studying peapods?
Mendel learned from the study of peapods the basis for recessive and dominant gene composition as well as the cell of a plant can contain two different traits but not both traits.
