Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bio103
Unit 12, 13, 16
| What do nucleotides consist of? | a nitrogen base, 5 carbon sugar, and a phosphate group |
| How many bases does a nucleotide have? How many is always used? | 4 bases; 1/4 is always used |
| What alternates to form 1 backbone? | phosphate group and carbon sugar |
| Bases in nucleotides include.... | 2 purines: adenine, guanine 2 pyrimidines: thymine, cytosine |
| What is Chargaff's rule about DNA structure? | A-t, C-T (apples to trees, cars to garage |
| Why is a replication of DNA considered semiconservative? | because each "old" strand (parent strand) serves as a template for the formation of a new strand |
| In what 3 ways is RNA different from DNA? | RNA is single stranded, contains sugar ribose, and the pyrimidine uracil |
| What is the builder of proteins? | RNA |
| transcription | synthesis or copying of a strand of RNA based on the DNA templates |
| pedigrees | showing the ancestral history of an individual by tracing a particular trait back several generations |
| What are traits shown in pedigrees? | [_]= male, O= female, generations, sex, autosomal, x-linked, dominate, recessive |
| autosomal | both male and female are equally likely to be affected |
| x- linked | males are more commonly affected than females (recessive) |
| karyotype (human) | an individual chromosome composition 23 pairs= total of 46 chromosomes |
| polyploidy | presence of multiple sets of chromosomes , common in plants but lethal in humans |
| aneuploidy | abnormal presence or absence of 1 chromosome in a set |
| trisonic | condition with the addition of an extra chromosome |
| monosonic | condition when one member of the chromosomal pair is missing |
| nondisjunction | failure of homologous chromosomes to seperate |
| trisomic 21 | 3 chromosomes for chromosome pair 21 because of autosomal trisomic, has 47 chromosomes instead of 46 and also known as down syndrome |
| What does the breakage and rejoining of chromosome parts result in? | structural changes within or between chromosomes |
| duplication error | segment of the chromosome is repeated 1 or more times |
| inverted error | orientation of the chromosome segment is reversed |
| deletion breakage | loss of a part of a chromosome |
| gene therapy | a strategy that aims to replace a mutant allele with a normal allele to treat some serious genetic diseases |
Created by:
lacim05
Popular Biology sets