Question

Evidence that homeotic loci in vertebrates are homologous to those in invertebrates includes

A. similarities in how the genes are organized on the
chromosome.
B. similarities in DNA sequence.
C. the fact that they descended from a common ancestor.
D. The first and second choices are both evidence that
these loci are homologous.

Answer 1

Evidence that homeotic loci in vertebrates are homologous to those in invertebrates includes DNA sequence similarities and gene organization on chromosomes, which are part of Hox genes conserved across species, showcasing homologous structures due to a common ancestor.

Step-by-step explanation:

The evidence that homeotic loci in vertebrates are homologous to those in invertebrates includes similarities in DNA sequence and how the genes are organized on the chromosome. These loci are part of a group of genes known as Hox genes, which are highly conserved across many animal species and are vital for determining the embryonic development. The significant similarity in DNA sequence of these genes and their organization reflects the homologous nature stemming from a common ancestor. Additionally, organisms exhibit homologous structures both morphologically and genetically, indicating their shared evolutionary paths.