Individuals and conservation groups have donated funds to buy land in the Monteverde Cloud Forest in Costa Rica. As a result, much of the forest is now protected as a private nature reserve. This is an example of:
a. restoration
b. preservation
c. ecosystem creation
d. ecosystem commercialization
e. deforestation
b
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Although Darwin and Wallace understood the central importance of heritability among organisms to
the process of evolution, they could not explain how new variations arose or how they were passed to the next generation.
Indicate whether the statement is true or false.What type of tissue contains mitochondria that can release energy as heat, rather than storing it in ATP?
a. skeletal muscle b. brown adipose tissue c. white adipose tissue d. epidermis e. dermis
Crossing over
a. generally results in binary fission. b. involves nucleoli. c. involves breakages and exchanges being made between sister chromatids. d. alters the composition of chromosomes and results in new combinations of alleles being channeled into the daughter cells. e. is the same as disjunction.
Half of the gametes produced by an organism with the genotype Aa will receive the A allele, while half will receive the a allele. What process produces such results?
A) independent assortment B) mutation C) random fertilization D) segregation