Mendelian Genetics, Basics of Man Inherit, Complex Inherit, Chromo. Man Heredity
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| Mendel was the first person to succeed in predicting how traits are _________ from generation to generation. | Inherited
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| In peas, both male and female sex cells, which are called _______, are in the same flower. | Gametes
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| ________________ occurs when a male gamete fuses with a female gamete in the same flower. | Self-pollination
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| Mendel used the technique called _________________ to breed one plant with another. | Cross-Pollination
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| Mendel studied only one _____ at a time and analyzed his data mathematically. | Trait
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| In individuals with a heterozygous genotype, the _________ allele of a trait is hidden by the expression of the other phenotype. | Recessive
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| In individuals with a heterozygous genotype, the ________ allele of a trait is visible in the phenotype. | Dominant
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| A cross between plants that involves one characteristic is called a __________ cross. | Monohybrid
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| Mendel also performed ________ crosses, which involve two ____ pairs, with pea plants. | Dihybrid, gene
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| When he crossed two pea plants that were heterozygous for bothseed shape (Rr) and for seed color (Yy), he observed a 9:3:3:1 ________________ among the seeds of the offspring. | Phenotypic ratio
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| A Punnett square shows the possible phenotypes and _________ of the offspring. | Genotypes
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| A ________ shows the inheritance of a particular trait over several generations. | Pedigree
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| An organism with two of the same alleles for a particular trait are said to be __________ for that trait. | Homozygous
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| An organism with two different _______ for a particular trait is heterozygous for that trait. | Alleles
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| When alleles are present in the ____________ state, the ________ trait will be observable. | Heterozygous, dominant
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| An individual who is heterozygous for a _________ disorder is called a carrier. | Recessive
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| Examples of recessive genetic disorders in humans are _______________ and ________. | Cystic fibrosis, albinism
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| Caused by altered genes; results in lack of skin pigment | Albinism
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| Recessive genetic disorder; characterized by body's inability to tolerate glactose | Glactosemia
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| Recessive genetic disorder; gene found on chromosome 15;characterized by lack of enzyme that breaks down fatty acids | Tay-Sachs disease
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| Recessive genetic disorder; affects mucus-producing glands, digestive enzymes, sweat glands | Cystic Fibrosis
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| Dominant genetic disorder; affects the nervous system | Huntington's disease
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| Autosomal dominant genetic condition; affects height and body size | Achondroplasia
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| A scientist uses a pedigree to study family history. (T or F) | True
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| A pedigree traces the inheritance of a particular trait through only two generations. (T or F) | False
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| In a pedigree, one who does not express the trait is represented by a darkened square or circle. (T or F) | False
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| In a pedigree, a horizontal line between two symbols shows that these individuals are the parents of the offspring. (T or F) | True
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| Micrograph of chromosomes | Karyotype
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| Abnormal number of chromosomes | Nondisjunction
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| Withdrawl of tissue from the placenta | Chorionic villus sampling
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| Extra chromosome 21 | Down syndrome
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| Protective cap at the end of a chromosome | Telomere
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