Lecture 1 (Define)
Define Diversity of Structure and give an example
Different combinations of DNA nucleotides create different DNA molecules
A hypothesis is the final step in scientific inquiry
False
If a skin cell of a bird has 10 chromosomes, this same cell would have (BLANK) molecules of DNA after S phase was completed. Each daughter cell produced by this skin cell would have (BLANK) chromosomes.
A. 20/10
B.10/10
C.10/20
D. 20/20
E. 20/5
A. 20/10
Define the ability to replicate and give an example
Turning one double helix into two (separate, use as a template, strands connect)
S phase
You must be able to test a hypothesis
True
The function of mitosis is/are
A. to generate gametes in sexually reproducing organisms.
B. to allow bacteria to grow
C. to repair tissues in eukaryotes
D. to allow multicellular organisms to go through development
E. C and D
E. C and D
Define Mutability and give an example
Errors during DNA replication introduce random/spontaneous mutations and create genetic variation
Chemical modifications change a C to a T
The results of a single test can prove a hypothesis correct
False
During the S phase of the cell cycle, what occurs?
A. A single-stranded molecule of DNA replicates, generating a double-stranded molecule
B. The DNA helix splits into two single-stranded DNA strands
C. Identical sister chromatids are generated
D> Non-identical sister chromatids are generated
E The number of chromosomes doubles
C. Identical sister chromatids are generated
Define central dogma and explain the steps/parts (DNA,mRNA, proteins, translation, transcription)
DNA (transciption) to mRNA (translation) to proteins
A hypothesis is a description of the expected results of a test
False (that is a prediction)
All of the following are advantages of asexual reproduction EXCEPT
A. Fewer risks of getting STD's
B. Faster population increases
C. Less genetic variation
D. Fewer risks from predators
E. less energy, time, and resources spent on attracting a mate
C. Less genetic variation
A hypothesis is a possible explanation for a natural phenomenon
True