Final Exam Flashcards
A human cell containing 22 autosomes and a Y chromosome is…
a sperm
Which life cycle stage is found in plants but not animals?
multicellular haploid
Homologous chromosomes move toward opposite poles of a dividing cell during…
meiosis I
Meiosis II is similar to mitosis in that…
sister chromatids separate during anaphase
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
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 II would be
x
How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n=8)?
16
Gene
a heritable unit that determines a character; can exist in different forms
allele
an alternative version of a gene
character
a heritable feature that varies among individuals
trait
a variant for a character
dominant allele
determines phenotype in a heterozygote
recessive allele
has no effect on phenotype in a heterozygote
genotype
the genetic makeup of an individual
phenotype
an organism’s appearance or observable traits
