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a dominant allele is an allele that takes over the recessive allele and a recessive allele is a trait that is skipped or held back
Dominant: Tongue Roller Free (Unattached) Earlobes Farsightedness Astigmatism Freckles Dimples in cheeks Feet with normal arches PTC taster Widow's Peak Double-jointed thumb Broad lips Polydactyly (Extra fingers and toes) Syndactyly (Webbed digits) Achondroplasia (herterozygous: dwarfism; homozyogous: lethal) Huntington's disease Normal skin pigmentation Absence of Tay-Sachs disease Normal Mentation Recessive: Inability to rill tongue into U shape Attaches earlobes Normal vision Absence of freckles Absence of dimples Flat feet PTC nontaster Straight hairline Tight thumb ligaments Thin lips Normal number of fingers and toes Normal digits Normal carilage bone formation Absence of huntington's disease Albinism Tay-Sachs disease Cystic Fibrosis Schizophrenia (Courtesy of "Human Anatomy and Physiology)
What else can I help you with?
Is a situation in which a dominant allele completely masks a recessive allele for a gene.?
If you have 2 dominant alleles, the gene will be dominant, if you have 2 recessive alleles, the gene will be recessive. But if you have 1 recessive and 1 dominant, the Dominant allele will mask the recessive one.
What do dominant and recessive alleles have in common?
Alleles are different types of a gene. Each gene controls a characteristic and they is usually a recessive allele and a dominant one. The main similarity is that they both control a certain characteristic!
What is the opposite of homozygous of dominant?
heterozygous recessive
What gene is masked if it is paired with a dominant gene?
The different forms of a gene are called alleles. In Mendelian genetics, a gene has a dominant allele and a recessive allele. The dominant allele masks the recessive allele if present. So there are two possible dominant genotypes: homozygous dominant, in which both dominant alleles are present; and heterozygous, in which one allele is dominant and the other allele is recessive. The only way to express a recessive trait is to have the homozygous recessive genotype.
A single gene trait that has two alleles and that shows a simple dominant recessive pattern will result in?
A 3:1 phenotypic ratio (Mendelian inheritance).
What can be dominant or recessive?
Alleles can be dominant or recessive
How are Dominant and recessive alleles are represented in Punnet Square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
How are dominant and recessive alleles are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What is gene pair consists of two dominant alleles or two recessive alleles?
A gene pair that consists of 2 dominant or 2 recessive alleles is considered homozygous dominant or homozygous recessive.
What type of alleles mask recessive alleles?
Dominant alleles :-)
What are the two terms for having matching alleles for a certain trait?
The two terms for having matching alleles for a certain trait are "homozygous dominant" (two dominant alleles) and "homozygous recessive" (two recessive alleles).
How dominant and recessive alleles are represented in a Punnett Square?
Dominant alleles are written in upper case (i.e, 'A'), while recessive alleles are lower case (i.e, 'a')
How is recessive alleles different from dominant alleles?
You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.
How dominant and recessive are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
How do dominant alleles recessive alleles differs?
Dominant alleles are the ones that show up in the phenotype. Recessive alleles do not unless both alleles are recessive, but can be passed on. For example: Tt , T=tall and t=short. Tall is dominant and short is recessive. You are tall and can pass on the short gene. Or, you can use black hair being dominant over red. Or, brown eyes being dominant over blue. Dominant can be seen on you and recessive can't.
Are organisms with alleles BB recessive or dominant?
Organisms with alleles BB are considered homozygous dominant. This means that the dominant allele (B) is expressed in the phenotype. Dominant alleles mask the effects of recessive alleles in heterozygous individuals.
What makes a dominant alleles different from a recessive alleles?
A dominant alle masks the expression of the recessive trait in a heterozygous genotype, a recessive allele is the phenotpye expressed is the recessive trait.
