Consider the following data derived from a test cross of a female fruit fly that was heterozygous for the recessive, autosomal loci scarlet eyes (st), shaven bristles (sv), and ebony body (e):

Phenotype #observed phenotype #observed
+ st sv 227 + + + 17
e st sv 15 e + sv 232
e + + 245 + + sv 13
e st + 13 + st + 238

(a) Use this data to determine whether zero, two, or three of these genes are linked. Diagram the correct genotype of the heterozygous female parent. Indicate linkage (coupling or repulsion of alleles).
(b) Determine the map distance between all linked genes.

Dominant over the mutant vermilion (bright red) allele. a homozygous wild-type female fly is mated with a vermilion male fly. predict the eye colors of f1 and f2 generations. (assume that the f1 flies are allowed to interbreed to produce the f2 generation.)

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e. g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.