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Chapter 8 Cellular Reproduction 1
Terms in this set (21)
The ability to reproduce sexually or asexually __________.
is a criterion for distinguishing living things from nonliving matter
Asexual reproduction __________.
produces offspring genetically identical to the one single parent
Sexual reproduction is different from asexual reproduction in which way?
Sexual reproduction requires fertilization of an egg by a sperm.
Most of an organism's DNA is carried by its _____.
Replication of chromosomal DNA occurs __________.
before a cell divides
With the exception of gametes, a human cell contains _____ chromosomes.
Human somatic cells contain 22 pairs of nonsex chromosomes (autosomes) and 2 sex chromosomes.
The cell cycle is a series of events that occur in which order?
G1, S, G2, mitosis, cytokinesis
Which of the following is a function of the cell cycle that involves mitosis in eukaryotes?
Which of the following is the correct order for the four main stages of mitosis?
prophase, metaphase, anaphase, telophase
A benign tumor is a condition in which tumor cells __________.
remain confined to their original site; The spread of cancer cells to new locations is called metastasis.
A typical body cell with 23 pairs of chromosomes is called a _____.
A typical body cell is diploid.
Sexual reproduction requires the cellular process of _____ followed by _____.
meiosis ... fertilization
Meiosis produces gametes and a gamete from one individual unites with a gamete from another individual during fertilization.
Meiosis and cytokinesis result in the formation of __________.
four haploid cells
In mitosis a cell that has doubled its genetic material divides into two diploid daughter cells. In meiosis a cell that has doubled its genetic material undergoes two rounds of division, resulting in four haploid cells.
The process of meiosis accomplishes which of the following choices?
It produces four haploid cells and allows exchange of genetic material between homologous chromosomes.
Which of the following statements is correct?
Meiosis results in gametes that are used in reproduction.
Orientation of homologous pairs of chromosomes at metaphase I results in alternative arrangements that contribute to genetic variation in offspring. The orientation is called _____.
Crossing over is __________.
the exchange of corresponding portions of homologous chromosomes
Which of the following statements resulted from research on bdelloid rotifers regarding sexual reproduction?
Bdelloid rotifers have evolved for millions of years without any sexual reproduction.
Accidents can occur in meiosis wherein members of a chromosome pair fail to separate at anaphase. This is called _____.
The resulting gametes will have abnormal numbers of chromosomes.
Which one of the following combinations of sex chromosomes results in Turner syndrome?
This is the sex chromosome complement of an individual with Turner syndrome.
A consequence of asexual reproduction in a plant is that __________.
its entire genetic legacy can remain intact
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