Meiosis & Mitosis Test Review Questions and 100% Correct Verified Solutions| Latest Update
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Course
Mitosis and Meiosis
Institution
Mitosis And Meiosis
What is the name given to the cells produced at the end of meiosis I in males? - Answer
Secondary spermatocyte
What is the name given to the cells produced at the of meiosis I in females? - Answer
Secondary Oocyte
At the end of meiosis II in males, what cells are produced? - Answer Spermatid
Meiosis & Mitosis Test Review Questions and
100% Correct Verified Solutions| Latest Update
What is the name given to the cells produced at the end of meiosis I in males? - Answer
Secondary spermatocyte
What is the name given to the cells produced at the of meiosis I in females? - Answer
Secondary Oocyte
At the end of meiosis II in males, what cells are produced? - Answer Spermatid
What do these cells (from the previous question{ at the end of meiosis II in males what
cells are produced}) eventually become? - Answer the mature sperm
Before fertilization, what happens to the secondary oocyte? - Answer Proceeds to
Meiosis II
During fertilization which two cells come together? - Answer Secondary oocyte &
mature sperm
During Meiosis II, the secondary oocyte divides unevenly, with one cell(the ovum)
receiving half of the chromosomes and nearly all the cytoplasm and organelles, while
the other cell, the polar body, is much smaller and eventually degenerates. Propose an
explanation why the secondary oocyte divides in this way. - Answer The ovum will
receive more organelles such as the mitochondria for making energy, which will provide
the zygote with all of its cytoplasm and organelles, but nuclear division is necessary to
produce the correct number of chromosomes in the oocyte.
, What is the ploidy of the zygote produced by fertilization-diploid or haploid? - Answer
Diploid
What would the ploidy of the zygote be if egg and sperm were produced by mitosis
rather than meiosis? How would this affect the ploidy of each successive generation? -
Answer The ploidy of the zygote would be genetically identical to the parent cells. Since
mitosis doesn't reduce the number of chromosomes by half, each successive generation
would have twice as many chromosomes as the last. The homologous pairs of
chromosomes found in the zygote have come from each parent. One half of each pair is
maternal and the other half is paternal.
What phrase is used to describe the chromatids after crossing over takes place and the
homologous chromosomes separate? - Answer Recombinant chromosomes
Are the genes on a recombinant chromatid the same as the original chromatid? -
Answer Yes, each chromosome in the homologous pair contains the same genes in the
same place on the chromosome, so a switch between chromosomes would not affect
the genes present.
Are the alleles on a recombinant chromatid the same as the original chromatid? -
Answer No, the chromosomes in the homologous pair can have different alleles for each
gene, so a switch in a portion of the chromosome would affect the information in that
chromatid.
Meiosis and sexual reproduction each lead to variation in the genetic makeup of every
person. Explain how meiotic events, as well as the random fertilization of eggs and
sperm, together lead to this genetic variation. - Answer Independent assortment leads
to multiple different and paternal gene combinations being produced in the cells as the
end of Meiosis I. Chiasma formation between homologous pairs of chromosomes leads
to block of genes being swapped between non sister chromatids during separation at
anaphase I. This leads to allele combinations on the chromosomes that end up in egg
and sperm after Meiosis II. Random fertilization of eggs and sperm means that when
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