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WorksheetsBiol24 Fundamentals of Genetics
Total questions: 41
Worksheet time: 43mins
The diagram on the left shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated?
mutation in which the DNA content of the gene is altered
segregation of sister chromatids
condensation and segregation of alleles
crossing-over in which alleles are exchanged
What happens to sister chromatids in meiosis II?
They duplicate.
They separate.
They remain together
They do not take part.
Why is it important for the daughter cells to divide a second time in meiosis?
The second division switches parts of matching chromatids to increase genetic variation.
The second division forms four identical cells to ensure that all offspring have the same traits.
The second division forms haploid cells that can combine with other haploid cells during fertilization.
Both A & C
Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes an
event that results from mitosis but NOT meiosis?
. two stages of cell division
replication of cellular genetic material
daughter cells that are identical to the parent cell
four daughter cells that are produced from each parent cell
Which type of reproduction leads to increased genetic variation in a population?
Parthenogenesis
Asexual Reproduction
Sexual reproduction
Vegetative reproduction
Differentiate sister chromatids from homologous chromosomes
What happens if the cell doesn’t get a signal to proceed the cell cycle?
Differentiate haploid from diploid cell
Describe what happens in the picture
Describe what happens during this phase
If an organism has a diploid number of 16 chromosomes, what is its haploid number?
(a)
The diagram on the right shows two strawberry plants. Plant 2 is produced asexually from Plant 1. If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2?
14
28
56
112
What is the difference between prophase of mitosis and prophase I of meiosis?
In a single celled organism, mitosis is used for?
development.
reproduction.
growth.
repair
Which of the following observations represents the interphase stage of a cell?
Centrosomes are on the opposite poles
DNA is present in the form of chromatin
Spindle fibers begin to form
Nuclear envelope is absent
Site where crossing over occurs
(a)
What is the difference between metaphase of mitosis and metaphase I of meiosis
What would most likely result if mitosis was not accompanied with cytokinesis?
2 cells each with 1 nucleus
2 cells each without nucleus
1 cell with 2 identical nuclei
1 cell w/o nucleus
Mechanism of cancer cells
If a parent cell contained 30 chromosomes, its daughter cells would contain 15 following mitosis
True
False
The main difference between meiosis and mitosis is that
DNA replicates during mitosis, but does not during meiosis.
During mitosis, sister chromatids separate; they do not during meiosis.
Mitosis makes genetically identical copies; meiosis does not.
Mitosis increases chromosome number in each cell, while meiosis decreases it.
What are the things you learned from Module 2 Lesson 2.2? List atleast five
Which of the following happens during both meiosis and mitosis?
Crossing over
Random alignment of homologous chromosomes
Sister chromatids separate
Homologous chromosomes separate
What is a tetrad?
During meiosis, when does crossing over occur?
Prophase I
Anaphase I
Prophase II
Anaphase II
Which of the following statements is true about mitosis in humans?
All cells of the body go through mitosis more or less constantly from conception until death.
Each cell undergoing mitosis divides into two completely new cells that are usually identical to the cell from which they originated.
It takes roughly two weeks for a cell to go through all six phases of mitosis
All of the Above
Explain the difference between dominant and recessive alleles. For example, if I have brown eyes what would the allele look like.
Compare and describe the relationship between:
- Phenotype and Genotype
Compare and describe the relationship between:
homozygous / heterozygous / hybrid
Compare and describe the relationship between:
gene / locus / alleles
Different forms of a gene are called:
recessive factors
dominant factors
alleles
hybrids
Which of the following statements is false?
Prokaryotic cells are smaller than eukaryotic cells
Eukaryotic organisms can be multicellular
Prokaryotic lack a nucleus
Plant cells are not eukaryotic
The organelle found in both animal and plant cells that is clear but contains dissolved nutrients and ions is the:
vacuole
cytoplasm
rough ER
golgi body
Compare plant and animal cells. Be sure to include at least three organelles plant and animal cells have in common, and another three organelles that are different
How do organelles i eukaryotic cells act in a manner similar to the organs in a multicellular organism?
Using the following image of a prokaryotic cell, identify two of the labeled parts and indicate its function.
Each identical side of a chromosome is the
centromere
centriole
chromatin
chromatid
Label the following numbered parts on the image provided
When DNA is in its less coiled, "relaxed," state, between cell divisions, it is called
autosomes
chromatin
chromatid
centromere
Which is NOT a true statement about the cell’s genetic material?
Chromatin becomes a tightly packed chromosome when mitosis begins
Chromatin is made of DNA and found loose in the nucleus
The two sister chromatids are genetically identical to each other
The two sister chromatids are genetically different from each other
