Question: Which allele combination refers to a purebred trait?

homozygous. when an organism has the same alleles for a trait. also known as a purebred. example: TT or tt.

What is a purebred allele?

An offspring inherits two alleles for each trait. An offspring may inherit two alleles for the same form of a trait or two different alleles. … An organism that has two identical (same) alleles for a trait is called a purebred.

Which combinations of alleles are pure?

A pure trait is also known as a homozygous trait. Homozygous traits are either a combination of the same two dominant alleles or the same two recessive alleles. A hybrid trait is also known as a heterozygous trait, and is the pairing of a dominant and recessive allele.

Is purebred AA or AA?

Ch. 16 Vocabulary- Genetics

homozygous an organism that has two identical alleles for a trait (purebred; AA or aa)
genotype an organisms genetic make up or allele combination (AA, Aa, aa)
phenotype an organisms physical appearance or it’s observable traits (ex. attached earlobes, dimples)

What is the allele combination for a trait?

Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism.

What are examples of purebred?

Purebred is defined as an animal or human which is the result of unmixed breeding. An example of purebred is a cat whose parents were both Siamese. Of or relating to an animal having both parents of the same breed or variety. A purebred animal.

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What is an example of a purebred trait?

A purebred refers to offspring resulting from a true breeding. For example, two dogs of the same breed would have an offspring with rather predictable traits. … Nevertheless, selective breeding between same breed would be disadvantageous in terms of gene pool.

Is HH purebred?

Hint: BB, hh, ZZ, and jj are all examples of purebred genotypes. … Heterozygous genotypes have one copy each of the dominant and recessive allele.

Are purebreds homozygous?

Purebred – Also called HOMOZYGOUS and consists of gene pairs with genes that are the SAME. Hybrid – Also called HETEROZYGOUS and consists of gene pairs that are DIFFERENT. Genotype is the actual GENE makeup represented by LETTERS. Phenotype is the PHYSICAL appearance of a trait, such as a YELLOW (or BLUE) body color.

Is AA purebred genotype?

Purebred means that both alleles of a gene in a particular individual are the same. … If the allele codes for a recessive feature, and the phenotype displays the recessive feature, then you know that the particular individual is purebred for that allele. The genotype of the F1 hybrid offspring is Aa/Bb.

Is AA homozygous dominant?

Homozygous means that both copies of a gene or locus match while heterozygous means that the copies do not match. Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.

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