Chunk 1: A horse with red hair mates with a horse with white hair, and their offspring has both red and white hair: How can this be? If characteristics are controlled by single genes with simple dominant and recessive alleles, the colt's hair should be one color or the other. Not always! Most of the time, characteristics, such as hair color in horses, display more-complex patterns of heredity than the simple dominant and recessive discussed so far. the teacher told me what do I understand from this

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.