Write the name of each technique in the blank beside its description A. produces a record of electrical activity in the brain B. produces images of brain structure and function C. produces images of metabolic activity in the brain D. uses X-rays to produce images of brain structures E. uses magnetic impulses to produce images of brain structures

Answered below

Explanation:

Electroencephalography produces a record of the electrical activities in the brain. An electroencephalography is a test used to diagnose brain conditions such as epilepsy and other seizure disorders. Electrical activities are displayed on the electroencephalogram.

Functional magnetic resonance imaging produces images of brain structure and function. It shows the functional processes of the brain such as blood flow and neuronal activations.

The positron emission tomography scan produces images of metabolic activities in the brain. It uses radioisotopes to show the distribution of chemicals or neurotransmitters and measure the metabolic activities.

Computed tomography scan is uses many X-rays to produce images of brain structures. It is used in the diagnosis of many structural abnormalities.

Magnetic resonance imaging produces images of brain structures by the use of magnetic impulses. It is a lot safer as it doesn't produce dangerous radiations.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.