Answer;
Because this is necessary for the data to be valid
-The most important reason to control the conditions of an experiment is because this is necessary for the data to be valid.
Explanation;
-In a controlled experiment, the group that is testing the independent variable is called the experimental group. The other group that does not tests this variable is called the control group.
-It is important to make sure that when conducting a controlled experiment to test an hypothesis , all the variables are the same in two test groups apart from the case of independent variable.
B) gene duplication
C) histone modifications
D) random point mutations
Answer:
A) exon shuffling
Explanation:
Exon shuffling refers to the process of evolution of a new gene that consists of unique combinations of preexisting exons. These novel combinations of preexisting exons are formed when the interspersed repeats of introns of two different genes undergo the process of recombination.
The process of exon reshuffling is responsible for the presence of common domains between two otherwise different proteins of eukaryotes.
Example: Tissue plasminogen activator and epidermal growth factor are very different proteins but share the EGF domain.
The cascade of different hormones,that occur during adolescence is referred to as puberty.
Explanation:
Puberty is defined as a period of sexual maturity when Reproductive organ of the individual become functional. This results from several hormonal changes that take place in the body during this period.
In males, puberty is characterized by onset of spermatogenesis and in females, it is characterized by onset of ovulation or menstrual cycle.
During puberty, the individual develops secondary sex characters.
Answer:
B. organisms that have extreme traits
Explanation:
I can confirm this because I just did the test.
Answer:
its A
Explanation:
epithelial
nervous
muscular
Answer:
nervous
Explanation:
The nervous tissue is one of the four basic tissues of the organism, it is formed by two types of cellular elements, it represents the fundamental component of the structures and organs that make up the nervous system. The main function of the nervous tissue is to capture internal and external stimuli and transform them into nerve impulses. All modifications of the external or internal environment and sensory stimuli such as temperature, pressure, light, sounds and taste, among others, are detected, examined and transmitted by nerve cells. On the other hand, the nervous tissue is in charge of coordinating the motor, glandular, and visceral functions of the individual.