The result of fertilization is a zygote; what s the result of meiosis in animals?
clones
gametes
somatic cells
diploid cells
gametophytes
Which of the following is not associated with mitosis?
interphase
kinetochore
cell plate
tetrad
chromatin
In mitosis if each daughter cell has 20 chromosomes how many chromosomes would each parent cell have?
5
10
20
40
80
Which of the following statements are true of metaphase?
The duplication of chromosomes occur
homologous chromosomes cross over
the chromosomes are aligned at the spindle equator
the chromosomes move to opposite poles of the cell
the nuclear membrane reforms
Which of the following statements are false?
metastasis is the spread of cancer from one location to another in the body
2 types of tumors are benign and malignant
cancer cells divide rapidly to produce a mass of cells
proto oncogenes are mutated genes
tumor suppressor genes make p53 protein that inhibits mitosis
The chromosome number of an egg in drosophila melanogastor is 4 what is the chromosome number of a somatic cell?
2
4
8
16
32
Order of cell cycle?
DNA Replication, Telophase, Cytokinesis, and 2 identical daughter cells
nothing else
Which of the following does not produce genetic variation?
sexual reproduction
crossing over
independent assortment
random fertilization
transcription
Circle with 4 Xs in four square, what stage of meiosis?
prophase 1
metaphase 2
prophase 2
metaphase 1
anaphase 2
Centromeres uncouple and chromatids are separated from each other
statement true of mitosis
statement true of meiosis 1
statement true of meiosis 2
statement true of mitosis and meiosis 1
statement true of mitosis and meiosis 2
Which of the following is true?
Spindle fibers are made up of centrioles
Spindle fibers bring together sister chromatids
Spindle fibers attach to chromosomes during anaphase
spindle fibers are always present in a cell
spindle fibers are made of microtubules
A karyotype shows all of the following characteristics of an individual except
gender
species
down syndrome
number of chromosomes
ploidy number
What is the arrow pointing at in this figure (x with arrow)
sister chromatid
sister chromosome
chromosome
centromere
homologous chromosomes
The correct flow of info from gene to phenotypic expression is
RNA-DNA-protein-trait
trait-protein-DNA-RNA
DNA-RNA-protein-trait
protein-DNA-RNA-trait
trait-RNA-protein-DNA
Which enzyme is responsible for joining strands of DNA during replication
DNA polymerase
DNA ligase
topoisomerase
primase
helicase
An insertion of a base pair in a coding region of a gene can result in a _____________ mutation where the reading of codons by the ribosome is altered
frameshift
wobble
base-pair substitution
thymine dimer
nondisjunction
Which component is found in DNA molecules but not in RNA molecules
ribose
thymine
nitrogen containing bases
phosphate group
guanine
All of the following occur during translation except
helicase opens the strand for copying
an initiator tRNA binds to a ribosomal subunit and the mRNA
the initiation complex forms when a large ribosomal subunit joins the initiator tRNA and the mRNA
All of the following are post-transcription modifications f eukaryotic mRNA except
introns are removed
exons may be spliced
peptide bonds are formed
prokaryotic DNA found outside the main chromosome is known as a
PCR
cDNA
primer
DNA chip
plasmid
Master genes that control the formation of specific body parts are
enhancers
promoters
exons
operons
homoeotic
PCR is used to
isolate mutations
sequence DNA
mass produce a certain DNA fragment
attach a tracer to a segment of DNA
cut DNA at specific nucleotide sequences
Series of 3 nucleotide bases on a tRNA molecule that binds with mRNA
anticodon
RNA Polymerase
rRNA
exon
operator
Enzyme responsible for pairing RNA bases with the DNA template
In prokaryotic cells this is is the section of DNA that will bind a repressor in order to control gene population
The type of RNA found in ribosomes
