Consider the model for natural selection. in a population of living things, genetic variation exists. one source of variation is mutation. which scenario listed here could be a mutation that causes members of a population to die out? a) in a population of fast-running cheetahs, some are born that run slower than most. b) in a population of sunflowers, mutations cause some flower heads to produce more seeds. c) in a population of brownish rabbits that live in the tundra, some are born with fur that turns white in the winter. d) in a populations of birds, mutations result in different beak sizes so the birds do not compete for food in t

Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Yeast cells reproduce quickly by budding. this is a form of reproduction so all the yeast cells a) sexual; vary b) asexual; vary c) asexual; are identical d) sexual; differ from the parents submit hint structures and functions of cells cellular reproduction