Eukaryotes that are not closely related and that do not share many anatomical similarities can still be placed together on the same phylogenetic tree by comparing their _____
A) plasmids
B) mitochondrial genomes
C) homologous genes that are poorly conserved
D) homologous genes that are highly conserved
D
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The following is the sequence of bases in the sense strand of a DNA segment and contains the beginning of a gene. DNA 3' A T A T T A C C A G G C A T G G A C C C C C G G G 5'
Based on this sequence, write the sequence of the anti-sense DNA strand and the mRNA. Label the 5' and 3' ends in your predicted sequences. The start codon in this organism is AUG. Indicate where the start codon is in your sequence. Why is the start codon important? Why does there have to be a specific start codon? What will be an ideal response?
The yolk sac is indicated by
a. A. b. B. c. C. d. D. e. E.
Beadle and Tatum irradiated Neurospora and initially grew the mutant strains on complete medium. How were they
able to determine the type of mutation for each strain? a. By growing the mold on a complete medium with extra vitamins and nutrients b. By growing the mold on minimal media supplemented with different combinations of amino acids and vitamins c. By growing the mold in its diploid form to see which traits were masked d. By comparing Neurospora to other species of mold e. By observing the marked differences in morphology between the different strains
Pea plant tendrils wrapping around a string demonstrate
A) phototropism. B) lumitropism. C) gravitropism. D) amylotropism. E) thigmotropism.