Archaea are thought to have diverged from some ancient group of bacteria

The correct answer would be gram-positive bacteria.

Explanation:

Archaea, a group of unicellular prokaryotic organisms that have different molecular characteristics separate them from bacteria and eukaryotes. Archaea have a different evolutionary history from eukaryotes and bacteria.

Archaeans are more closely related to eukaryotes instead of bacteria that are also prokaryotes, based on several lines of experiments and evidence. Archaea and Eukarya are thought to have diverged from gram-positive Bacteria.

Thus, the correct answer is gram-positive bacteria.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).