-
SSB
Prevents reannealing of DNA
-
Primase
Lays down the RNA primer
-
DNA Polymerase III
The major polymerization enzyme
-
DNA Polymerase I
Chews our RNA primer
-
DNA Gyrase
Relaxes supercoiling
-
Helicase
Separates strands in the double helix
-
Ligase
Joins Okazaki fragments together
-
20 Angstroms
Diameter of B-DNA double helix
-
3.4 Angstroms
Distance between base pairs
-
Antiparallel
Orientation of the two strands in a double helix
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The histone core is made up of six different proteins (T/F)
False
-
Telomerase carries the telomere repeat's template as a DNA molecule embedded within it (T/F)
False
-
Topoisomerase II is one of the components of the protein scaffold that is the next stage in chromosome condensation after the solenoid. (T/F)
True
-
Centromeres are highly conserved in DNA sequence when you compare across major taxonomic levels (T/F)
False
-
Eukaryotic interphase chromatin is thought to be primarily at the condensation level of B-DNA (T/F)
False
-
True breeding lines are heterozygous at the loci of interest (T/F)
False. homozygous
-
The kinetochore proteins bind to the centromere DNA (T/F)
True
-
A telocentric chromosome has the centromere at the very end of the chromosome, so that no telomere is present at the end (T/F)
False
-
Meiosis is a reductional division in terms of chromosome number (T/F)
True
-
Genetic recombination in meiosis happens only in prophase I (T/F)
False
-
The principle of segregation of alleles is also known as
Mendel's First Law
-
The principle of independent assortment is also known as
Mendel's Second Law
-
In sex-linked traits, the female donates her X chromosome to...
both male and female progeny
-
In sex-linked traits, the male donates his X chromosome to...
only the female progeny
-
Which of the following is not a deviation from Mendelian inheritance
C) Complete dominance
-
Leptotene
Chromosomes start to condense
-
-
-
Diplotene
Chiasmata are first seen
-
Diakinesis
End of Prophase I
-
A sample of double stranded DNA was found to contain 22% G (guanine). What is the expected proportion of T (thymine)?
28%
-
The backbone of DNA strand is composed of:
B) sugars and phosphates
-
Which one of the following forces does NOT hold together the two strands of B-DNA double helix to each other?
B) Covalent bonds
-
In a naked DNA double helix, what is the linear dimension for a segment of DNA encompassing 100 turns?
0.34 um
-
In incomplete dominance, the heterozygote is distinguishable from either homozygote (T/F)
True
-
The A, B, and O blood group system in humans is an example of codominance (T/F)
True
-
The manx cat is an example of multiple alleles (T/F)
False. An example of lethal allele
-
The phenotypic ratio of a selfed dihybrid is 9:3:3:1 (T/F)
True
-
The genotypic ratio of a selfed monohybrid is 3:1 (T/F)
False. 1:2:1
-
The direction a new DNA strand is made is
5' to 3'
-
The direction that the template strand is read is
3' to 5'
-
The enzyme that breaks the H-bonds in the double helix
Helicase
-
The proteins that prevent double helix renaturation
SSBs
-
The other name for the 3'-5' exonuclease function is...
proofreading
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