Answer:
d. cerebrum, cerebellum, and brain stem is the correct answer.
Explanation:
The three major parts of the brain are:
- Cerebrum: It the largest part of the brain. It is made up of the right hemispheres and left hemispheres. It is responsible for voluntary activity, sensory functions, and neural functions.
- Cerebellum: It the region found below the cerebrum and back the brainstem, the function of the cerebellum is to regulate the motor and voluntary movements.
- brainstem: It controls the basic function of the body such as heart rate, breathing, blood pressure, swallowing, and consciousness.
Answer:
Crossing over is a process in which exchange of segments occur between two non sister chromatids.
Explanation:
Crossing over is a process in which two non-sister chromatids of homologous chromosomes exchange the segments of genetic material with each other during meiosis. Due to this process, variation occurs in an organism.
Independent assortment is a process in which different alleles are sorted to different gametes which occurs independently and does not effect one another. This process occurs in metaphase of meiosis l.
Joining of sex cells is a process in which sex cells of male and female join together formed a zygote which turn into a new organism. These sex cells are formed during meiosis which are haploid in nature.
Mutation and crossing over are the factors that cause inherited genetic variations within populations.
Sudden change occurs in the genes of an organism due to the exposure of the cell to radiation or chemicals.
Two ways carbon can get from the ocean to the lithosphere is through the marine plants + animals (in the ocean) , sediments, petroleum then to the lithosphere. The second way is through the shells + coral (in the ocean), limestone, then to the lithosphere.
