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In Drosophila, vermilion eye color is due to a recessive allele (v) located on the X chromosome. Curved wings is due to a recessive allele (cu) located on one autosome, and ebony body is due to a recessive allele (e) located on another autosome. A vermillion male is mated to a curved, ebony female, and the F1 males are phenotypically wild-type. If these males were backcrossed to curved, ebony females, what proportion of the F2 offspring will be wild type males?
Create a simple diagram of the N cycle in a watershed using boxes and arrows; no need for numbers and do not forget to include important pools and fluxes.
Ribozymes have various catalytic activities with reactions that follow classical enzyme kinetics other than with low catalytic rate.
A system is given by two compartments separated through a thin membrane, and solute moves from one compartment to the other through diffusion. The volume of compartment 1 is 0.03 cm^(3) and compartment 2 is 0.01 cm^(3).
If a maize plant is heterozygous for the alleles for pigmy and crinkly-leaf (both recessive to normal size of plant (S) and normal leaf (L) is self pollinated and 208 seeds are subsequently collected and germinated, how various would you expect to sh..
Two consecutive crosses, with the first between pure-breeding parents that differ in two phenotypes to create an F1 generation, and the second in two F1 progeny to create an F2 generation.
Consider a culture into which two E. coli strains are inoculated. Strain A is normal with g=21 min at 37 degrees C, and 42 mins at 27 degrees C. Strain B has a temperature-sensitive mutation, such that g=55 mins at 37 degrees C, and 39 mins at 27 ..
The green algal ancestors of plants lived in an aquatic environment, contained chlorophyll a and b, and had cell wall composed mainly of cellulose. Land plants also have chlorophyll a and b and have cellulose cell walls.
Acquisition of a conjugative plasmid harboring antibiotic resistance genes is one of the easiest ways for bacteria to develop resistance to antibiotics.
How do both meiosis and sexual reproduction (fertilization) produce offspring that differ genetically from the parents? Be sure to talk about the two specific steps in meiosis that increase variability as well as the process of fertilization.
The level of protein structure that is stabilized primarily by non covalent interactions in the side chains within a single polypeptide chain is refered to as its:
Assume you are conducting a mark-recapture study of a population of snouters. During your first sampling period you go out and catch or mark or release 141 snouters.
During the method of inspiration, the ______ contracts, pulling downward. Also, the ______ muscles contract and lift the rib cage. Together, these muscle contractions result in the ______ in the pressure in the ______ cavity.
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