zCh 2
_____ promotes an organism's survival in the natural habitat
adaptive behavior
What is an example of adaptive behavior that favors infant survival in humans?
attachment to caregiver
in terms of biological beginnings, which of the following occurs LAST?
cell division in the zygote
The threadlike structures that come in 23 pairs carrying the hereditary info necessary for cells to reproduce themselves are called _____
chromosomes
extra copy of chromosome 21?
down syndrome
____ psychology is the newest approach to psychology and emphasizes the importance of adaptation, reproduction, and survival of the fittest in shaping behaviors.
evolutionary
What unit of hereditary information is composed of short segments of DNA?
genes
____ help cells to reproduce themselves and to assemble proteins
genes
___ is a specialized form of cell division that occurs to form eggs and sperm
meiosis
an X linked disease is more likely to harm ____
men
environmental agents such as radiation, errors in cellular machinery, and chance can all lead to a ____ gene
mutated
As the environment changes, some species adapt in a way that helps them survive and reproduce, while other species do not adapt well and die. This process is called?
natural selection
____ is the complete set of developmental instructions for creating proteins that initiate the making of a human organism
the human genome
what is formed when fertilization occurs?
zygote
