Answer:
The involvement of more than two genes.
Explanation:
The polygenic characteristics have many phenotypes because more than two genes governs the phenotype of individual organism. The single gene contains a pair of alleles that codes for two phenotype and two genes will code for 4 phenotype. Thus, more than two genes for example, three genes will have six phenotypes.
The skin color and height are polygenic characterstics in humans.
The main difference between the organisms are the uses of the appendage and the size and number of certain bones. The human arm is used for a variety of functions while the lizard's and the cat's are used for walking an climbing, the whale's for swimming, the frog's for support and the bird's and the bat's for flying.
Answer:
Tissue
Explanation:
A cell is a structure formed during the evolution which contained all the molecules and favourable conditions required to survive and therefore acts as the functional and structural unit of life.
In evolution, more than one cell aggregated together to form a structure which could perform much complex function than a single cell called tissue as they are programmed to perform the same function.
In the given question, since the heart cells worked together to cause movement in the robot therefore the cardiac cells formed cardiac tissue or heart.
Thus, the tissue is the correct answer.
A is incorrect, ovulation happens around day 14. B. is correct, during the luteal phase LH from the anterior pituitory gland stimulates the corpus lutem to secrete progesterone. C. is incorrect, the follicular phase is when FSH is released from the anterior pituitary. D is incorrect, the luteum is stimulated in the luteal phase.
A fault line is a crack in Earth's crust or tectonic plates.
Earth's crust is located in the lithosphere.
Answer:
<span>The crust of the lithosphere that has fractured along plate boundaries and ridges</span>
