Mosaic development in animals.
a. is a type in which each of the fate of a blastomere is heavily determined by its neighbor cells. b. is synonymous with regulative development. c. is a type in which each of the early blastomeres lacks the potential of developing into a complete organism and removing a blastomere eliminates a future body part. d. Two but not three of the above are correcte. None of the choices is correct

Option C

Explanation:

Each of the blastomeres lack the potential of developing into a complete organism meaning each cell in the developing embryo during develop is specialized into forming a specific part of the body and if moved to another region other than where it is supposed to be will still form that specific part that it was specialized to form. The cells have an autonomous specialization that is not dependent on cell-cell interaction and the removal of the particular blastomere might lead to the loss of a particular body part.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation: