An Organism with Two Different Alleles for a Trait

Question

Match each term to its definition. Terms heterozygous Punnett square genotype codominance probability homozygous phenotype Definitions (a) a chart that shows all the possible combinations of alleles that can result from a genetic cross (b) a number that describes how likely it is that an event will occur (c) an organism that has two identical alleles for a trait (d) an organism's physical appearance, or visible traits (e) an organism's genetic makeup, or allele combinations (f) an organism that has two different alleles for a trait (g) an inheritance pattern in which the alleles are neither dominant nor recessive

Answer The definition “an organism that has two different alleles for a trait” matches heterozygous . Complete matching key Term Definition letter Match 8. heterozygous f an organism with two different alleles for a trait 9. Punnett square a a chart showing possible allele combinations from a genetic cross 10. genotype e an organism's genetic makeup or allele combination 11. codominance g an inheritance pattern in which neither allele is dominant or recessive 12. probability b a number describing how likely an event is to occur 13. homozygous c an organism with two identical alleles for a trait 14. phenotype d an organism's observable physical appearance or traits Keep the related terms separate A genotype is the allele combination itself; heterozygous is one possible description of that genotype. A phenotype is an observable outcome, so it cannot be inferred from “heterozygous” without knowing how the alleles interact. Dominant describes how an allele contributes to phenotype in a particular relationship, not the organism's genotype. A carrier is a narrower, context-dependent label. It commonly describes a person who has one disease- or trait-associated allele in a recessive or sex-linked inheritance context and does not show the corresponding condition or trait. Many carriers are heterozygous at the relevant locus, but not every heterozygous organism should be called a carrier.

Term	Definition letter	Match
8. heterozygous	f	an organism with two different alleles for a trait
9. Punnett square	a	a chart showing possible allele combinations from a genetic cross
10. genotype	e	an organism's genetic makeup or allele combination
11. codominance	g	an inheritance pattern in which neither allele is dominant or recessive
12. probability	b	a number describing how likely an event is to occur
13. homozygous	c	an organism with two identical alleles for a trait
14. phenotype	d	an organism's observable physical appearance or traits

This page answers the seven-item Pearson matching exercise using introductory diploid, single-locus terminology. Heterozygous describes two different alleles at a locus; it does not by itself establish a dominant phenotype or carrier status. Carrier is a context-dependent label tied to a particular disease or trait and inheritance pattern.

These references support the concepts and methods used in the explanation above.