Cell cycle
This is the process by which a cell divides into two new daughter cells
What is Cell Division
How many pairs of chromosomes do humans have?
23
If an organism inherits a dominant and a recessive allele, which trait will be expressed?
The dominant one.
A red flowering plant and a white flowering plant have offspring with pink flowers. What type of dominance does this show?
Codominance
How does a beneficial adaptation help organisms?
It increases their biological fitness.
What happens during Interphase?
DNA replicates, the cell grows, organelles are replicated.
If you are looking at a karyotype diagram, how can you tell that there is a genetic disorder
There are either extra or missing chromosomes.
In a genotypic ratio how many numbers are there?
3
Ms. Buchheit inherited one allele for curly hair and one for strait hair. She has curly hair. What type of dominance do the alleles she inherited show?
Incomplete dominance.
Why did the finches that Charles Darwin studied have different beaks on different islands?
They evolved their beaks to be better at getting food.
name the 4 phases of mitosis
Prophase, Metaphase, Anaphase, Telophase
What are the 4 molecules that make up DNA.
Cytosine, Guanine, Adenine, Thymine
What is the definition of heterozygous?
Inheriting or having two different alleles of a particular gene.
Draw how you would represent a female carrier who is married to her unaffected male cousin on a pedigree chart.
a circle that is half colored in connected by two lines to a square that is not colored in.
Humans have a structure in their abdomen called and appendix that they don't use anymore. What is the word that describes an unused structure?
Vestigial
What would cause a cell to undergo apoptosis?
It gets old, weak, or stops functioning correctly.
What is the function of mRNA?
It carries the genetic instructions from DNA to the ribosomes, where proteins are synthesized.
Draw a Punnett square showing all possible results for the offspring of a homozygous tall and a heterozygous tall pea plant.
(Use T and t to show dominant or recessive alleles.)
TT, Tt
Cross a normal male with a colorblind female on a punnett square. What is the possibility that they would have a colorblind daughter?
0%. All their daughter would carry the colorblindness allele though.
What type of selection is it when organisms in the center of a bell curve have better survivability.
Stabilizing selection
When cells experience uncontrolled growth and division it is called Cancer. What are 4 potential causes of cancer?
Smoking, Radiation, UV light, Some medications, genetic predisposition.
How many nucleotides make up a codon?
3
What are the genotypic and phenotypic ratios of a cross between two heterozygous tall pea plants?
Phenotype 3:1
Genotype 1:2:1
Cross bloodtype AB with a type O on a punnett square. Can these parents have a child with type B blood?
Yes.
Two populations of rats are separated from each other by a mountain. They would freeze before being able to reach the other population. The two populations can't breed with one another. What is this called?
geographic isolation