Jellyfish, Sponges and Worms are all invertebrates.
Vascular systems are important to transport materials throughout the organism.
Ans: A change in the number of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can occur during the formation of reproductive cells (eggs and sperm), in early fetal development, or in any cell after birth.
DOMINANT
Allele is the alternative form of same gene. Genes are expressed by phenotype which is the physical characteristics made by genotype and these are observable and dectectable. Another form of allele is the recessive one. This is the allele that is being masked in the phenotype if there is the presence of a dominant allele. All of these falls on genetics which is the study of structure and action , patterns of heredity. This usually use gene as the unit of inheritance and occurs in a location on the chromosome.
