Starfish has a endoskeleton
a coral has a exoskeleton
sponge has neither
Answer:
(a) Phosphatases remove the phosphate from GTP on GTP-binding proteins, turning them off
Explanation:
- A molecular switches are molecule that can be reversibly shifted between two or more stable states.
- The molecules may be shifted between the states in response to environmental stimuli, such as changes in pH, light, temperature, an electric current, micro-environment, or in the presence of ions and other ligands.
Answer:
Polygenetic inheritance
Explanation
Polygenetic inheritance also called Multifactorial inheritance it occurs when a single characteristic is controlled by more than two genes .
An example is the human skin pigmentation which is determined by the amount of melanin it contains.
Melanin production involves at least four genes. A combination of of melanin producing allele determines the degree of pigmentation.
This shows each gene has exerted a small addictive effect in determining the trait.
Answer:
1. Texas A&M University
2. Texas's premier research agency in agriculture, natural resources, & life sciences
Explanation:
Answer;
-Sex-determining chromosomes
Explanation;
Homologous chromosomes are chromosomes that have the same sequence of genes, that have the same structure, and that pair during meiosis.
-Sex chromosome is either of a pair of chromosomes that determine whether an individual is male or female. For example, the sex chromosomes of human beings and other mammals are designated by scientists as X and Y. In humans the sex chromosomes comprise one pair of the total of 23 pairs of chromosomes.Females have two copies of the X chromosome, while males have one X and one Y chromosome.
