Chapter 11 quiz
Do you prophase a homologous pair of chromosomes consist of
Two chromosomes & 4 chromatids
Cytokinesis usually, but not always follows mitosis. If a cell completed mitosis but not cytokinesis the result would be a cell with
Two nuclei
Centromere's of sister chromatids uncouple and chromatids separate
VII
If we continue to follow the cell lineage question four then the DNA content at metaphase 2 would be
X
Nucleoli are present during _____.
interphase
In comparing the typical lifecycles of plants and animals, stage found in plants but not in animals is a
multicellular haploid
Chromosomes become visible during _____.
prophase
Chromosomes first become visible during which phase of mitosis?
prophase
If the liver cells in an animal have 24 chromosomes and how many chromosomes do its sperm cells have
12
How many different combinations of maternal and paternal chromosomes can be packed in gametes made by organism with a diploid number of eight
16
If a cell has 8 chromosomes at metaphase of mitosis, how many chromosomes will it have during anaphase?
16
If there are 20 Centromeres in a cell at anaphase, how many chromosomes are there in each daughter cell following cytokinesis
20
If the DNA content of a diploid cell in the G1 phase of the cell cycle is X, then the DNA content of the same cell at metaphase of meiosis I would be
2x
Starting with a fertilized egg zygote, a series of five Cell division would produce an early embryo with how many cells
32
A cell containing 92 chromatids at metaphase of mitosis would at its completion produce two nuclei containing how many chromosomes
46
It's out in which two in equals six, the independent assortment of chromosomes during meiosis Can by itself give rise to genetically different gametes
8
What is a karyotype?
A display of every pair of homologous chromosomes within a cell, organized according to size and shape
Through a microscope, you can see a cell plate beginning to develop across the middle of the cell and nuclei reforming on either side of the cell plate. the cell is most likely
A plant cell in the process of cytokinesis
A human cell containing 22 autosomes and a Y chromosome is
A sperm cell
Asexual reproduction and sexual reproduction are different in that
All of the above
Centromeres uncouple,sister chromatids are separated, and the two new chromosomes move to opposite poles of the cell
Anaphase
Homologous chromosomes migrate to opposite poles during
Anaphase I
The human X and why chromosomes are
Called sex chromosomes because they determine an individual sex
In some organisms, mitosis occurs without cytokinesis occurring. This will result in
Cells with more than one nucleus
What is the name for the special region on a duplicated chromosome that holds the sister chromatids together
Centromere
The centromere is a region in which
Chromatids are attached to one another
What name is given to the process that restores the diploid number of chromosomes
Fertilization
The following is true of the process of meiosis
Four haploid cells results
During which phase of mitosis are chromosomes composed of two chromatids?
From G2 of interphase through metaphase
A particular cell has half as much DNA at some of the other cells in mitotically active tissues. the cell in question is most likely in
G1
Which of the following statements about genes is incorrect?
Genetic differences can result from changes in the DNA called mutations
Which of the following happens at the conclusion of meiosis one
Homolog is chromosomes are separated
Homologous is chromosomes move to opposite poles of a dividing cell during
Meiosis one
The longest of the mitotic stages
Metaphase
Crossing over usually contributes to genetic variation by exchanging chromosomal segments between
Not sister chromatids of homologous
Multicellular haploid organisms
Produce gametes by mitosis
Spindle fibers attach to kinetichores during
Prometaphase
Two centrosomes are arranged at opposite poles of the cell
Prometaphase
Centrioles begin to move apart in animal cells
Prophase
Crossing over occurs during which phase of meiosis
Prophase I
Synapsis occurs during
Prophase I
The correct sequence of steps in the M phase of the cell cycle is
Prophase, prometaphase,metaphase,anaphase,cytokinesis
What is a chromatid
Replicated chromosome
Of the following statements is false
Sexual maturity, ovaries and testes produce diploid gametes by meiosis
Meiosis 2 is similar to mitosis in that
Sister chromatids separate during anaphase
The immediate product of meiosis is in a plant is it
Spore
All of the following occurred during mitosis except
Synthesis of DNA
At the end of___and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids
Tele phase I
What is a genome?
The complete complement of an organism's genes
Which of the following is true of a species that has a chromosome number two in equals 16
There are eight homologous pairs