In order to be useful for constructing a phylogeny, a character must:
A. have a genetic basis.
B. vary within a species.
C. have only one state.
D. show the same state across several
species.
E. All of the answer options are correct.
A
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If an organism is an inversion heterozygote, __________
A) homologous chromosomes align during meiosis through formation of an inversion loop at synapsis B) homologous chromosomes align during meiosis through formation of a Holliday junction at synapsis C) non-homologous chromosomes pair during meiosis due to the translocation of genes between two different chromosomes D) it will experience normal chromosome synapsis during meiosis E) it will be unable to complete replication due to DNA damage, and the cell cycle will be arrested
A decreased risk of epigenetic imprinting disorders, such as Beckwith-Wiedemann syndrome, is observed in children
conceived following ART. a. True b. False
If a cell is in G2:
a. it has twice the amount of DNA present in a telophase nucleus. b. it has visibly distinct chromosomes. c. it lacks a visible nuclear membrane. d. it is in mitosis. e. it is in cytokinesis
Chloroplasts are composed of membranous sacs called ________ that carry chlorophyll. Surrounding these sacs is a ground substance called the ________.
Fill in the blank(s) with the appropriate word(s).