Cell Reproduction
What part of the DNA molecule determines your traits?
The sequence of nitrogen bases
Which genotype represents an individual that is heterozygous? Aa, BB, bb
Aa
What structures indicate common ancestry and have similar structures but different functions?
Homologous Structures
What is the purpose of enzymes?
To speed up chemical reactions
What is the difference between prokaryotes and eukaryotes?
What part of Interphase is DNA copied/replicated?
S phase
Make the following square BB vs. Bb.
50% BB and 50% Bb
What are vestigial structures?
Structures we have but no longer need- indicates evolution
Can an enzyme fit with any substrate or must it be specific?
Specific
Assume that the DNA of an organism contains 20% adenine. What percentage of thymine would be in this DNA?
What is 20%
The cell cycle includes mitosis. What happens during metaphase?
The chromosomes line up in the middle.
What is gene flow
The movement of alleles from one place to the next
What is the purpose of the active site on an enzyme?
It is where the enzyme and substrate connect
What is the function of mRNA?
to bring the genetic code out of the nucleus to the ribosome
If there are 64 chromosomes in a horse's fur cell, how many chromosomes would be in its sperm cell?
32
A cat has black and white spots, is this codominance or incomplete dominance?
Codominance
What is bottleneck?
A random death that decreases genetic variety.
What happens if an enzyme gets too hot?
It denatures (no longer works)
What is the purpose of translation?
to create protein from mRNA
What happens during Crossing Over?
Chromosomes cross over to give genetic diversity.
What is the difference between recessive and dominant genes?
Dominant traits only need one allele; recessive need two.
What is natural selection?
Survival of the fittest
Assume that transcription is occurring. What would be the sequence of nucleotides in the RNA that is made from the following DNA sequence? GCTATG
CGAUAC