BIO 30_Lec 4_A_Linkage and Recombination Basic Concepts

experimental cross between dominant phenotype (unkown genotype) and recessive phenotype (homozygous recessive genotype)

• Test Cross
• Forward Cross
• Side Cross

linear arrangement of non-allelic genes on the same chromosome

• Linkage
• Independent Assortment

genes do not assort independently; genes can be separated by crossing-over

• Linkage
• Independent Assortment

different genes are located on different homologous chromosomes

• Independent Assortment
• Linkage

one gene pair is assigned to a pair of homologous chromosomes

• Independent assortment
• Linkage

What kind of assortment/linkage is represented by this arrangement of chromosomes?

• Independent assortment

• Linkage

What should occur when the number of genes exceeds the number of chromosomes?

• Linkage
• Independent Assortment

physical association of genes on a chromosome

linkage group is equal to

• Diploid Number
• Haploid Number
• Tetraploid Number
• Triploid Number

published by Thomas Hunt Morgan in 1910; Confirmed the Chromosome Theory; Linkage in ___

• Drosophila
• Apidae
• Diptera
• Aedes