Why is sexual reproduction most likely the ancestral state in eukaryotes?

a. Asexual reproduction is completely absent from basal unicellular eukary-otes.
b. Under the parsimony principle, the most common form of a trait's state is always the ancestral state.
c. The "twiggy" distribution of obligate asexual reproduction in phylogenetic trees makes it more likely that asexuality is a derived trait.
d. Evolutionary models suggest that obligate asexual taxa are more prone to extinction than sexual ones.


C

Biology & Microbiology

You might also like to view...

The smallest difference in DNA sequence between a gene in two individuals is a single-nucleotide polymorphism (SNP)

Indicate whether the statement is true or false

Biology & Microbiology

Chorionic villi eventually become the placenta

Indicate whether the statement is true or false.

Biology & Microbiology

Gel electrophoresis separates DNA molecules based on variability in their

A) nucleotide sequence. B) affinity for agarose. C) charge. D) size. E) charge and size.

Biology & Microbiology

Organisms that ignore oxygen and grow equally well in its presence or absence are called

A. microaerophiles. B. aerotolerant. C. facultative anaerobes. D. anoxygenic.

Biology & Microbiology