True or false 1. There is only one set of alleles responsible for determining each trait-dominant or recessive.
2. Some traits are determined by more than one gene, such as eye color.
3. Environment plays role in how a gene is expressed.
4. Genes determine all your characteristics.
5. A mutation is a change in the genetic code of an organism.
6. All mutations are harmful and cause the organism to not develop properly.
7. Dominant traits are always found in a population.
8. Each parent contributes half their genetic code to their offspring.
9. Chromosomes are organized structures that contain proteins and a single-coiled strand of DNA.
10. Chromosomes are visible to the naked eye.
11. Alleles are units of heredity-specific sequences of DNA and RNA that create proteins with particular functions in an organism.
12. Genes are variants of an allele.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.