Different Types of Variation

Question 1

1. Environmental Variation:
   a. Phenotypic Plasticity: capacity of a single __ to develop any of several phenotypic states, depending on the environmental __ to which it is exposed
   - -EX. Daphnia develop protective helmets and longer tail spines when exposed to __ cues from predators during development

Answer 1

a. genotype, conditions

- - chemical

Question 2

Phenotypic Plasticity can be quantified using the __ of ___: set of phenotypic expressions of a genotype under __ environmental conditions
– EX. take bacteria and grow them under different ambient __

Answer 2

b. norm of reaction: different

- - temperatures

Question 3

Phenotypic plasticity can be:

a. R___ ( EX. hibernation in ground squirrels is __ on the date of snow melt and temp)
b. P___ (EX. Sex of sea turtles, depends on the ___ the egg is exposed to during __)
c. A__ (EX. Aphids can __ wings to crowding, or __ food quality)
d. M__ (Ex. __ on fetuses)

Answer 3

a. Reversible (dependent)
b. Permanent (temp, incubation)
c. Adaptive ( develop, poor)
d. Maladaptive (alcohol)

Question 4

2. Genetic Variation:
D/H/P:
Ho:
He:
Dominance: the effect the allele type has on the \_\_

Answer 4

Diploid/Haploid/Polypoid: Homozygote, heterozygote, phenotype