#Question id: 8778
#Unit 9. Diversity of Life Forms
The following question refers to this phylogenetic tree, depicting the origins of life and the three domains. Horizontal lines indicate instances of gene or genome transfer.
A possible phylogenetic tree for the three
domains of life.
If the early history of life on Earth is accurately depicted by the figure, then which statement is most in agreement with the hypothesis proposed by this tree?
#Question id: 31179
#Unit 4. Cell Communication and Cell Signaling
#Question id: 23209
#Unit 13. Methods in Biology
#Question id: 5808
#Unit 8. Inheritance Biology
Mitochondrial DNA polymerase does not have an error checking mechanism such as that of nuclear DNA polymerase. This would be expected to lead to a higher rate of which type of mutation in mitochondrial DNA?
#Question id: 4813
#Unit 8. Inheritance Biology
You perform the three different two-factor crosses (Cross 1: XY and xy, Cross 2: YZ and yz, and Cross 3: XZ and xz). Assume all crosses are between diploid flies homozygous for the alleles of these genes. You observe 7% recombinants in the first cross, 20% recombinants in the second cross, and 13% recombinants in the third cross. if cross between XyZ and xYz leads to which of the followining recombinant with double cross over .