Test Bank Questions and Answers for Blood Bank-Genetics Rated A+
Sex-linked dominant trait - Answers A dominant trait carried on an X chromosome,
Recessive - Answers an allele that is expressed only in the homozygous state. When present in the
heterozygous form, its expression is completely masked by the dominant allele.
Phenotype - Answers The observable product of the genes at a given locus; example: the gentoypes A/O
and A/A will exhibit the same phenotype (A).
Locus - Answers a specific point on a chromosome where designated alleles reside.
Linked genes - Answers two or more genes on a given chromosome, residing so close to one another
that they are inherited as a single unit.
Homozygous - Answers having identical alleles at a given locus on a pair of chromosomes.
Heterozygous - Answers having different alleles at a given locus on a pair of chromosomes.
Genotype - Answers the exact allelic gene occupying a given locus on a pair of chromosomes; example:
(A/O).
Gene - Answers a subunit of a chromosome that carries specific genetic information, is located at a
specific locus on the chromosome and is self-reproducing.
Dominant - Answers an allele that is expressed whenever it is present. It is expressed in both the
homozygous and heterozygous genotypes.
Avidity - Answers overall strength of the binding between a single antibody and an epitope of an
antigen.
Autosome - Answers any chromosome other than a sex-chromosome
Autosomal dominant trait - Answers a dominant trait carried on an autosome
Amorph - Answers a silent gene. A gene that produces no detectable product.
Allele - Answers alternate forms of a gene for a given locus
23 - Answers Normal human cell contain __ pairs of chromosomes
Codominant - Answers Equal expression of two different inherited alleles
Haplotype - Answers Set of linked genes inherited together because of their close proximity on a
chromosome
Cis - Answers Two or more genes on the same chromosome of a homologous pair.
Trans - Answers Genes inherited on the opposite chromosome of a homologous pair.
Sex-linked dominant trait - Answers A dominant trait carried on an X chromosome,
Recessive - Answers an allele that is expressed only in the homozygous state. When present in the
heterozygous form, its expression is completely masked by the dominant allele.
Phenotype - Answers The observable product of the genes at a given locus; example: the gentoypes A/O
and A/A will exhibit the same phenotype (A).
Locus - Answers a specific point on a chromosome where designated alleles reside.
Linked genes - Answers two or more genes on a given chromosome, residing so close to one another
that they are inherited as a single unit.
Homozygous - Answers having identical alleles at a given locus on a pair of chromosomes.
Heterozygous - Answers having different alleles at a given locus on a pair of chromosomes.
Genotype - Answers the exact allelic gene occupying a given locus on a pair of chromosomes; example:
(A/O).
Gene - Answers a subunit of a chromosome that carries specific genetic information, is located at a
specific locus on the chromosome and is self-reproducing.
Dominant - Answers an allele that is expressed whenever it is present. It is expressed in both the
homozygous and heterozygous genotypes.
Avidity - Answers overall strength of the binding between a single antibody and an epitope of an
antigen.
Autosome - Answers any chromosome other than a sex-chromosome
Autosomal dominant trait - Answers a dominant trait carried on an autosome
Amorph - Answers a silent gene. A gene that produces no detectable product.
Allele - Answers alternate forms of a gene for a given locus
23 - Answers Normal human cell contain __ pairs of chromosomes
Codominant - Answers Equal expression of two different inherited alleles
Haplotype - Answers Set of linked genes inherited together because of their close proximity on a
chromosome
Cis - Answers Two or more genes on the same chromosome of a homologous pair.
Trans - Answers Genes inherited on the opposite chromosome of a homologous pair.
