Delgado Bio 141 Test 4 -Answered
A consistent graphical representation of mating's and offspring over multiple
generations for a particular trait - ANSWER-pedigree
A Punnett square has rows and columns which represent gametes made by males and
females. At the intersection of each row and column e combine the corresponding
gametes to produce the genotype of a potential _______ - ANSWER-zygote
Adjacent nucleotides in the same DNA strand are held together by covalent bonds
known as - ANSWER-phosphodiester bonds
Agents that cause mutation are known as - ANSWER-mutagens
All DNA polymerases require a short strand of DNA or RNA , is called a _____, to begin
their synthesis - ANSWER-primer
Alleles involved in human blood types that are co dominant are - ANSWER-IA and IB
(little and b)
An enzyme that prevents chromosomal shortening by attaching a repeat sequence to
the ends of chromosomes is - ANSWER-telomerase
as the lagging strand is being synthesized, adjacent Okazaki fragments are joined by
the enzyme DNA - ANSWER-ligase
attaches a nucleotide to the 3' end of the DNA strand - ANSWER-polymerase
based on replication proteins, DNA replication in archaea is most similar to that of -
ANSWER-eukaryotes
by convention, the sequence of DNA bases is usually written in the ____' to ____'
direction. - ANSWER-five to three
components of a nucleotide - ANSWER-phosphate group, 5 carbon sugar, nitrogenous
base
Continuous phenotypic variation results from - ANSWER-polygenic inheritance and
independent segregation of genes
DNA replication in eukaryotic cells is complicated by the fact that eukaryotic cells have -
ANSWER-linear chromosomes
, DNA replication that leads to the production of double helices with one parental strand
and one newly synthesized strand is consistent with - ANSWER-semiconservative
replication
DNA'S phosphodiester _____ is composed of sugars and phosphates - ANSWER-
backbone
does DNA or RNA polymerases require primers to begin synthesis - ANSWER-DNA
Each DNA molecule is composed of two strands that run antiparallel and composed of 2
phosphodiester strands whose model is this a part of - ANSWER-Watson-Crick model
Franklin used x-ray ____ to suggest that DNA has a helical structure - ANSWER-
diffraction
Griffith's experiments were important because they showed - ANSWER-that the genetic
material could be passed from one cell to another
how many hydrogen bonds form between cytosine and guanine in the DNA double helix
- ANSWER-3
In a DNA double helix, two hydrogen bonds form between - ANSWER-adenine and
thymine
In bacterium, termination of replication occurs - ANSWER-opposite to the origin (the
termination site)
In the Meselson-Stahl experiment, what was the expected composition of DNA
molecules after one round of replication, if the conservative model was correct? -
ANSWER-two densities should be observed: the DNA strands would be either all heavy
or all light
In the Meselson-Stahl experiment, what was the expected composition of DNA
molecules after two rounds of replication, if the semiconservative model was correct- -
ANSWER-half of the molecules would have two light strands and half would have a
heavy and light strand
in the replisome, the ______ is composed of primase, helicase, and accessory proteins
that prime the lagging strand - ANSWER-primosome
lagging strand - ANSWER-synthesized in small fragments that are later connected
leading strand - ANSWER-synthesized continuously
Makes a 10-12 base-pairs complementary primer to the DNA - ANSWER-primase
A consistent graphical representation of mating's and offspring over multiple
generations for a particular trait - ANSWER-pedigree
A Punnett square has rows and columns which represent gametes made by males and
females. At the intersection of each row and column e combine the corresponding
gametes to produce the genotype of a potential _______ - ANSWER-zygote
Adjacent nucleotides in the same DNA strand are held together by covalent bonds
known as - ANSWER-phosphodiester bonds
Agents that cause mutation are known as - ANSWER-mutagens
All DNA polymerases require a short strand of DNA or RNA , is called a _____, to begin
their synthesis - ANSWER-primer
Alleles involved in human blood types that are co dominant are - ANSWER-IA and IB
(little and b)
An enzyme that prevents chromosomal shortening by attaching a repeat sequence to
the ends of chromosomes is - ANSWER-telomerase
as the lagging strand is being synthesized, adjacent Okazaki fragments are joined by
the enzyme DNA - ANSWER-ligase
attaches a nucleotide to the 3' end of the DNA strand - ANSWER-polymerase
based on replication proteins, DNA replication in archaea is most similar to that of -
ANSWER-eukaryotes
by convention, the sequence of DNA bases is usually written in the ____' to ____'
direction. - ANSWER-five to three
components of a nucleotide - ANSWER-phosphate group, 5 carbon sugar, nitrogenous
base
Continuous phenotypic variation results from - ANSWER-polygenic inheritance and
independent segregation of genes
DNA replication in eukaryotic cells is complicated by the fact that eukaryotic cells have -
ANSWER-linear chromosomes
, DNA replication that leads to the production of double helices with one parental strand
and one newly synthesized strand is consistent with - ANSWER-semiconservative
replication
DNA'S phosphodiester _____ is composed of sugars and phosphates - ANSWER-
backbone
does DNA or RNA polymerases require primers to begin synthesis - ANSWER-DNA
Each DNA molecule is composed of two strands that run antiparallel and composed of 2
phosphodiester strands whose model is this a part of - ANSWER-Watson-Crick model
Franklin used x-ray ____ to suggest that DNA has a helical structure - ANSWER-
diffraction
Griffith's experiments were important because they showed - ANSWER-that the genetic
material could be passed from one cell to another
how many hydrogen bonds form between cytosine and guanine in the DNA double helix
- ANSWER-3
In a DNA double helix, two hydrogen bonds form between - ANSWER-adenine and
thymine
In bacterium, termination of replication occurs - ANSWER-opposite to the origin (the
termination site)
In the Meselson-Stahl experiment, what was the expected composition of DNA
molecules after one round of replication, if the conservative model was correct? -
ANSWER-two densities should be observed: the DNA strands would be either all heavy
or all light
In the Meselson-Stahl experiment, what was the expected composition of DNA
molecules after two rounds of replication, if the semiconservative model was correct- -
ANSWER-half of the molecules would have two light strands and half would have a
heavy and light strand
in the replisome, the ______ is composed of primase, helicase, and accessory proteins
that prime the lagging strand - ANSWER-primosome
lagging strand - ANSWER-synthesized in small fragments that are later connected
leading strand - ANSWER-synthesized continuously
Makes a 10-12 base-pairs complementary primer to the DNA - ANSWER-primase
