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Osteogenesis Imperfecta
________ leads to a defective type I collagen that causes bones to be brittle and weak.
Huntington Disease
The gene for ________ is located on chromosome 4.
Punnett Square
A(n) ________ is a diagram that shows all the possible combinations of genes that can be inherited by offspring.
Codominance
________ is a type of inheritance where both alleles are fully expressed.
Methemoglobinemia
________ is an autosomal recessive disorder caused by an accumulation of methemoglobin in the blood.
Fertilization
________ gives each new individual two factors for each trait.
Mutant Huntingtin
________ also attracts and causes other proteins to clump with it, including CBP, which helps nerve cells survive.
Marfan Syndrome
________ is caused by a mutated gene (FBN1) on chromosome 15.
Drosophila Melanogaster
________, the fruit fly, is a favorite subject for genetic research because it has several mutant characteristics that are easily determined.
Homozygous
________: Having two identical alleles for a trait.
Homogentisic Acid
________ also accumulates in joint spaces and connective tissues, leading to darkening of the tissues and eventually arthritis by adulthood.
Methylene Blue
________ is a strong reducing agent that converts methemoglobin back into hemoglobin.
Pleiotropy
________ is when a single gene has multiple effects, leading to a group of symptoms called a syndrome.
HGD
The ________ enzyme breaks down homogentisic acid, but when it's missing, homogentisic acid accumulates in the blood and is passed into the urine.
Porphyria
________ is caused by a chemical insufficiency in the production of hemoglobin, leading to photosensitivity, abdominal pain, port- wine- colored urine, and paralysis.
Phenotype
________: The physical appearance of an organism, which is determined by its genotype and the environment in which it lives.
Monohybrid Cross
A ________ is a genetic cross between two individuals that differ in only one trait.
Recessive Allele
A ________ is an allele that is not expressed in the phenotype when it is paired with a dominant allele.
Dominant Alleles
_________ are alleles that are expressed in the phenotype, even when they are paired with a recessive allele.
Genotype
The ________ is the genetic makeup of an individual, including all of their alleles.
Phenotype
The ________ is the physical appearance of an individual, which is determined by their genotype and environmental factors.
Alleles
_________ are the different forms of a gene.
Homozygous
An individual is ________ for a trait if they have two identical alleles for that trait.
Heterozygous
An individual is ________ for a trait if they have two different alleles for that trait.
Dominant Allele
The ________ is the allele that is expressed in the phenotype when it is paired with a recessive allele.
Recessive Allele
The ________ is the allele that is not expressed in the phenotype when it is paired with a dominant allele.
Dihybrid Cross
A ________ is a genetic cross between two individuals that differ in two traits.
Autosomal Disorders
_________ are genetic disorders that are not caused by a chromosome abnormality.
Recessive Disorders
_________ are genetic disorders that are caused by recessive alleles.
Dominant Disorders
_________ are genetic disorders that are caused by dominant alleles.
Incomplete Dominance
_________ is a type of inheritance in which the phenotype of the heterozygous individual is intermediate between the phenotypes of the two homozygous individuals.
Pleiotropy
_________ is a phenomenon in which a single gene affects multiple traits.
Linkage Groups
_________ are groups of genes that are located on the same chromosome and are inherited together.
X-linked
_________ refers to genes that are located on the X chromosome.