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33 Cards in this Set
- Front
- Back
What is homozygous
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same two alleles Ex. BB
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what is a phenotype
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it is the phisicall appearance
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what is heterozygous
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an organism that has two different alleles for a trait
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what is a genotype
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genetic make-up of an organism for a trait
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what is Punnet Square
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a tool to predict offspring traits
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what is dominant
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a form of a trait that appears to to dominate or mask another form of the same trait
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what is a sex-linked gene
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an allele inherited on a sex chromosome
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what does recessive mean
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the form of a trait that seems to dissapear
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what is genes
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on the chromosome theat controlls the traits that are passed to offspring
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what is DNA
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Deoxidribonucleic Acid that is in the cells that stores information consists of strandswith molecules that control cell activities using coded instructions
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what are chromosomes
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thread like strands of DNA and protien in a cell nucleus that carry the code for cell charcteristics of an organism
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_____ is double spiral molecule with pairs of nitrogen bases
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DNA
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RNA differs from DNA in that it contains _____
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uracil
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a cell with 24 chromosomes some undergoes meiosis, the sex cells produced will each have ____ chromosomes
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12
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name the five stages of mitosis
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1)Interphase
2)Prophase 3)Metaphase 4)Anaphase 5)Telophase |
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name the stairs of DNA and name wich go together
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1) Guanine
& 2) Cytosine 3) Thymine & 4) Adenine there also all made up of nitrogen bases |
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During _____ in mitosis, doublestranded chromosomes seperate
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anaphase
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Chromosomes are doubled during
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anaphase
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The chromosome number in cells after mitosis is _____ the parent cell
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the same as
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Budding fission and rgeneration are froms of _____
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asexual reproduction
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______ is any permanent change ina gene or chromosome
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mutation
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Meiosis produces _____
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sex cells
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In the cell cycle most of th life of any cell is spent in ____
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interphase
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what is the differance between genes and chromosomes
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the difference between genes and chromosomes is that the genes controll the traits the are carryed to the offspring and the chromosome carrys the code for the organism
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what are the differance between offspring formed by sexual reproduction and asexual reproduction
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the differences between offspring formed by sexual reproduction and asexual reproduction is the number of chromosomes is inherited differently
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what do spindle fibers do during mitosis and meiosis
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the centromeres are attached to the spindle fibers
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in what cells do mitosis and meiosis take place
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in sexual reproduction cells
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why is more known about harmful mutations than benifcial ones
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benificial mutations are not known as well as harmful ones because some have no affect on the organism
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what does stand for RNA
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Ribonnucliec acid
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if one starnd of DNA had bases ordered ATCCGTC, what strand would be the bases of it's othere strand
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TAGGCAG
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_____ are located on chromosomes
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genes
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color blindness results from and allele that is ____
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on the x chromosome
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The major job of genes is
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to controll the traits
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