Final answer:
Chromosomal inheritance is the transfer of DNA sequences on chromosomes from parents to offspring, while epigenetic inheritance refers to the transmission of heritable gene expression changes that do not involve alterations to the DNA sequence.
Step-by-step explanation:
.The transmission of DNA sequences in chromosomes is called chromosomal inheritance; transmission of the structural modification that alter the availability of DNA sequences for transcription is called epigenetic inheritance. The chromosomal theory of inheritance posits that chromosomes, which are made up of DNA and proteins, are the vehicles for genetic heredity. This theory was advanced by Walter Sutton and Theodor Boveri, who explained that genes located on chromosomes are passed from parents to offspring. On the other hand, epigenetic inheritance involves modifications, such as DNA methylation or histone modification, that don't change the DNA sequence but can alter gene expression patterns and are heritable.
Transmission of DNA sequences in chromosomes is called mendelian inheritance; transmission of the structural modification that alter the availability of DNA sequences for transcription is called epigenetic inheritance.