LSU BIOLOGY 1001 CHAPTER 11
EXAMINATION QUESTIONS WITH CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
meiosis - Answer-a diploid nucleus divides twice, producing 4 haploid nuclei and
cytokinesis, which packages the 4 nuclei into separate cells
Meiosis I - Answer-Separates Homologous Chromosomes into Two Haploid Daughter
Nuclei
Meiosis II - Answer-Separates Sister Chromatids into Four Daughter Nuclei
Chiasmata - Answer-crosses where chromatids of the maternal and paternal
chromosomes have exchanged parts
crossing over - Answer-the mutual exchange of DNA between maternal and paternal
chromosomes at chiasmata
Recombination - Answer-the formation of chromosomes with combinations of alleles
that differ from those of either parent
zygote - Answer-a diploid fertilized egg
nondisjunction - Answer-errors in meiosis
Turner Syndrome - Answer-also called Monosomy X; having 1 X chromosome;
Individuals with this disorder are phenotypically female but fail to go through puberty.
They are usually sterile and have other traits
Trisomy X - Answer-(XXX) These individuals are female and are usually fertile
Klinefelter Syndrome - Answer-(XXY) These individuals are phenotypically male and are
usually sterile
Sexual Reproduction - Answer-offsprings are produced through union of gametes;
offspring are different from one another and either parent
Gametes - Answer-Sperm and eggs
Gene - Answer-a sequence of nucleotides
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