F Part B Assessments
Match the endocrine gland in column A with a characteristic of the gland in column B. Place the letter of your choice in the
space provided. 2 3
Column A
Column B
a. Adrenal cortex
1. Located in sella turcica of sphenoid bone
b. Adrenal medulla
2. Contains alpha, beta, and delta cells
c. Hypothalamus
d. Pancreatic islets
3. Contains colloid-filled cavities
e. Parathyroid gland
Pituitary gland
5. Secretes corticosteroids
g. Thymus
6. Attached to pituitary gland by a stalk
h. Thyroid gland
7. Gland inside another gland near kidneys
4. Attached to posterior surface of thyroid gland
8. Located in mediastinum

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:

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answerself- groups