Question

the chromosome theory
learning objective 18.2: differentiate between the genetic information held on two homologous chromosomes, two nonhomologous ch
imagine you are studying two different genetic structures. each structure has a set of the same 10 genes, and the alleles for each gene are di
could the two structures be? select all that apply.
homologous chromosomes
sister chromatids
non - sister chromatids
non - homologous chromosomes

Explanation:

1. Homologous chromosomes: These are chromosome pairs (one from each parent) that have the same genes at the same loci but can have different alleles. So if two structures have the same 10 genes with different alleles, they could be homologous chromosomes.
2. Sister chromatids: These are identical copies of a single chromosome formed during DNA replication. They have the same alleles for all genes, so they do not fit the description of having different alleles for each gene.
3. Non - sister chromatids: These are chromatids from homologous chromosomes. Since homologous chromosomes can have different alleles, non - sister chromatids (from different homologous chromosomes) can have the same genes with different alleles.
4. Non - homologous chromosomes: These carry different sets of genes (not the same 10 genes as described), so they do not fit.

Answer:

A. Homologous chromosomes
C. Non - sister chromatids