7th Grade Science Unit Two - Heredity & Evolution

The process of the passing of genetic traits from parents to offspring is called _________________.
A hereditary trait that disappears in the first generation and then reappears in the second generation is a:
1. dominat trait
2. recessive trait
The set of instructions for an inherited trait is called a _________.
When human sex cells are produced they:
1. have the same number of chromosomes as the parent cell.
2. have twice as many chromosomes as the parent cell.
3. have half as many chromosomes as the parent cell.
During meiosis, ________ cells are made from one parent cell.
1. 2
2. 4
3. 6
4. 8
Males have:
1. XX sex chromosomes
2. XY sex chromosomes
A molecule that is present in all living cells and determ,ines inherited characteristics is:
DNA is copied every time a cells divides.
1. True
2. False
The shape of a strand of DNA is:
1. a ladder
2. a double helix
3. an elipse
4. a figure eight
Changes in the number , type, or order of bases on a piece of DNA are known as:
The process in which inherited characteristics within a population change over generations such that new species sometimes arise is called:
1. adaptation
2. evolution
3. modification
4. substitution
__________ are the remains or imprints of once-living organisms found in layers of rock.
The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals is called:
When a species dies out completely, it has become ________.
Which type of fossil dating is more precise?
1. relative dating
2. absolute dating
3. they are about the same
The oldest era in the geological time scale is the _____________ era.
1. Cenozoic
2. Paleozoic
3. Precambrian
4. Mesozoic
Hominids appeared in which geological era?
1. Mesozic
2. Paleozoic
3. Cenozoic
4. Precambrian
According to evolution theory:
1. humans decended from chimpanzees
2. humans and chimpanzees share a common ancestor
Check the characteristics of hominids:
1. lack of a tail
2. C shaped spine
3. bipedalism
4. both eyes are located at the front of the head
Which is the only hominid that still exists?
1. Neanderthals
2. Homo Sapiens
3. Homo habilis
4. Australopithecines
Homo sapiens
1. appeared on all continents spontaneously.
2. have existed for millions of years.
3. existed in and migrated out of Africa.
You are:
(Select all the true statements.)
1. a neanderthal
2. a primate
3. living in the Cenozoic era
4. not a hominid
5. a member of the Animalia kingdom
You are a small, single-celled organism that lacks nuclei. You live in the soil of a back yard in North Carolina. You are a member of the ___________ kingdom.
1. Archaebacteria
2. Protista
3. Eubacteria
4. Fungi
If you make your food through the process of photosynthesis, you must be a member of the _________ kingdom.
Fungi get their food
1. from photosynthesis
2. by eating it
3. by absorbing nutrients from substances in their suroundings