Across
- 4. The offspring resulting from interbreeding (or self-pollination) of the hybrid FF1 generation
- 5. A type of gene interaction in which the phenotypic expression of one gene alters that of another independently inherited gene
- 7. An organism that is heterozygous with respect to a single gene of interest All the offspring from a cross between parents homozygous for different alleles are monohybrids For example, parents of genotypes AA and aa produce a monohybrid of genotype Aa
- 8. A human genetic disorder caused by a recessive allele for a chloride channel protein; characterized by an excessive secretion of mucus and consequent vulnerability to infection; fatal if untreated
- 11. The true-breeding (homozygous) parent individuals from which F1 hybrid offspring are derived in studies of inheritance; P stands for "parental "
- 13. The situation in which the phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous for either allele
- 15. Any of the alternative versions of a gene that may produce distinguishable phenotypic effects
- 16. The genetic makeup, or set of alleles, of an organism
Down
- 1. An organism that is heterozygous with respect to two genes of interest All the offspring from a cross between parents doubly homozygous for different alleles are dihybrids For example, parents of genotypes AABB and aabb produce a dihybrid of genotype AaBb
- 2. The first filial, hybrid (heterozygous) offspring arising from a parental (P generation) cross
- 3. In genetics, the mating, or crossing, of two true-breeding varieties
- 6. The situation in which the phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate, distinguishable ways
- 8. The situation in which the phenotypes of the heterozygote and dominant homozygote are indistinguishable
- 9. In genetics, an individual who is heterozygous at a given genetic locus for a recessively inherited disorder The heterozygote is generally phenotypically normal for the disorder but can pass on the recessive allele to offspring
- 10. Mendel's first law, stating that the two alleles in a pair segregate (separate from each other) into different gametes during gamete formation
- 12. An allele that is fully expressed in the phenotype of a heterozygote
- 14. A technique associated with prenatal diagnosis in which amniotic fluid is obtained by aspiration from a needle inserted into the uterus The fluid and the fetal cells it contains are analyzed to detect certain genetic and congenital defects in the fetus