Crossing a true-breeding red-flowered snapdragon with a true-breeding white-flowered snapdragon produces all pink snapdragons in the F1 generation. If F1 individuals are crossed, what will be the ratio of phenotypes in the F2 generation?
A) 2 red:1 pink: 2 white
B) 1 red: 2 pink: 1 white
C) 3 pink: 1 white
D) 1 red:1 pink: 2 white
E) 3 white: 1 pink
Answer: B
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The human lineage began to diverge from those of other primates about
A. 153 million years ago. B. 210 million years ago. C. 6 million years ago. D. 18 million years ago. E. 64 million years ago.
In Drosophila melanogaster, the allele for long wings is dominant over the allele for vestigial wings, and the allele for
a gray body is dominant over the allele for a black body. A testcross was done to check for genetic linkage between the genes for these traits, with the following results for the offspring:410 flies with long wings and a gray body 105 flies with long wings and a black body 390 flies with vestigial wings and a black body 95 flies with vestigial wings and a gray body Which of the choices below best represents the map distance between the genes for these two traits?
a. 25.0 map units b. 40.0 map units c. 10.0 map units d. 100.0 map units e. 9.5 map units
The body temperature of tunas is 8-10° C higher than ambient water temperature
Indicate whether the statement is true or false
________ is the carrier molecule required to transport peptidoglycan subunits to the location where they will be incorporated into the growing bacterial cell wall.
A. UDP glucose B. Malonyl-CoA C. Acyl carrier protein D. Bactoprenol