Sexual reproduction uses __________ to generate _______ gametes, which join at fertilization
A) meiosis; haploid
B) mitosis; haploid
C) meiosis; diploid
D) mitosis; diploid
E) mitosis; identical
A
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Multiple alleles are common because
A) RNA is an informational molecule, and many sequences are possible for a particular gene. B) proteins are informational molecules, and many amino acid sequences are possible. C) a gene sequence can vary in different ways and still encode a functional protein. D) there are many humans on the planet.
For water to be transported to the top of a tall tree, several forces must be at work. From the choices below, which combination of forces explains this sort movement?
a. turgor pressure and evaporation b. water heat capacity and pH c. cohesion and transpiration d. gravity and conductivity
The maximal growth rate of a population is called its
a. carrying capacity. b. exponential growth. c. logistic growth. d. biotic potential. e. fundamental niche.
The form of natural selection that leads to an increase in the frequency of alleles which promote the fitness of genetic relatives is called ________
A) direct selection B) indirect selection C) inclusive selection D) kin selection