The probability that a disease phenotype will appear when a disease-related genotype is present is called ____________________
Fill in the blank(s) with correct word
penetrance
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The intercellular spaces between plant cells
(a) contain air. (b) are responsible for cytoplasmic streaming. (c) produce energy for the cell. (d) contain chloroplasts.
The effect of resource availability on
population size determines a. the carrying capacity of the environment. b. exponential growth. c. the doubling time of a population. d. the population's biotic potential. e. all of these.
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coli cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the conservative model of DNA replication was correct, what is the expected distribution of DNA in the density gradient after two rounds of replication?
A. one band of light density and one band of intermediate density B. one band of intermediate density C. one band of heavy density D. one band of light density E. one band of light density and one band of heavy density
________ are plants with primitive conducting systems.
A. Ferns B. Mosses C. Coniferous trees D. Liverworts and hornworts