Question

Explain four pieces of evidence that support the common ancestry of eukaryotes.

Answer 1

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjPhaT56NPPAhUL72MKHS6sALoQFgglMAE&url=https%3A%2F%2Fquizlet.com%2F2580415%2Fchapter-25-flash-cards%2F&usg=AFQjCNEX7EzNQf0dsGPVcGwiYSdP9cK6hg

Answer 2

this should help I have to leave now.

Answer 3

nope

Answer 4

have you looked in google?

Answer 5

yes i have

Answer 6

guessing that didn't help, right?

Answer 7

yeah not really

Answer 8

did you check out the link that that person sent?

Answer 9

yeah it only mentioned something about prokaryotes

Answer 10

do you go to an online school? or is this for HW?

Answer 11

lol sorry im asking so many questions

Answer 12

its ok

Answer 13

this might help: tps://www2.gwu.edu/~darwin/BiSc151/Eukaryotes/Eukaryotes.html

Answer 14

"Unifying Features of Eukaryotes
Below is a list of important features that are likely to have been present in the common ancestor of eukaryotes. Some of these features are still universally found in all eukaryotic diversity, while others have been lost or drastically transformed in some lineages, but are nevertheless ancestral to those groups (see Fig. 3 for examples).

Cytoskeleton consisting of tubulin-based microtubules and actin-based microfilaments, and ancestrally including motile cell extensions called ‘flagella’ or ‘cilia’ that contain an axoneme of 9 peripheral microtubular doublets and 2 central microtubules.
An endomembrane system that consists of endoplasmic reticulum, Golgi bodies, vacuoles, lysosomes, peroxisomes, and the nuclear envelope.
Primary genome of each cell consisting of multiple linear chromosomes contained within a membrane-bound nucleus. Following replication of the genome the chromosomes are segregated by the process of mitosis. Cells in many species can have more than one nucleus.
Mitochondria - organelles with diverse functions, usually including aerobic respiration, iron sulfur cluster assembly, and synthesis and breakdown of small molecules such as lipids and amino acids. Mitochondria are bounded by two membranes, and usually contain a small genome. They are the descendents of an alpha-proteobacterial endosymbiont.
Translation machinery in the form of 80S ribosomes, each consisting of four molecules of RNA complexed with many proteins, and partitioned in a small (40S) and a large (60S) subunit."
http://tolweb.org/Eukaryotes/3