final Flashcards
What is the point on a chromosome where two sister chromatids are attached?
The Centromere
What is a biopsy?
An examination of tissue removed from the body.
What is it called when cancerous cells spread to other tissues or parts of the body?
Metastasis
Tumors that are harmful and can invade other tissues or spread to other parts of the body are called ______.
Malignant Tumors
If a gene sequence contains 25 adenine base pairs, how many thymine bases will be included on the mRNA strand?
0, in mrna, thymine is replaced with uracil
Know how to write out the complimentary DNA strand of a DNA sequence.
thymine pairs with adenine (T-A) guanine pairs with cytosine (G-C)
What are codons?
3 base pairs of Mrna
Review how to use punnett squares.
They can help to predict the variations and probabilities.
Review how to read a pedigree.
Boxes represent males, while circles represent females, if they are filled in they carry a dominant gene, if they are half filled in then they are heterozygous
Know how to read a karyotype. How do you tell if they are male or female?
XY indicates a male karyotype; XX would indicate a female karyotype
Homozygous
ff or FF
Heterozygous
Ff
Dominant
F
Recessive
f
Genotype
the genetic makeup of an organism
Phenotype
the observable physical properties of an organism
alleles
the two versions of dna we inherit from mom one from dad
If two heterozygous parents produce offspring, what is the probability that they will have children that are homozygous? What about heterozygous children?
Homozygous 50%, heterozygous 50%
What is the difference between meiosis and mitosis?
meiosis:production of gametes in sexual reproduction
Mitosis: asexual reproduction of unicellular eukaryotic cells
What is the innate (nonspecific) immune system? What is included in the innate immune system?
The defenses you are born with, like stomach acid or white blood cells.
Gram-negative bacilli
Red rod shaped bacteria
Gram-negative cocci
red spherical bacterium
Gram-negative spirillum
Red spiral shaped bacteria