Punnett Squares
What is a dominant allele?
An allele that is dominant over any other.
Which division process does crossing over occur.
Prophase I
True or false: are all mutations harmful?
False.
What is the structure of DNA.
Double Helix
Snapdragons, horses...
What did Mendel experiment with?
How many rounds of division does meiosis undergo?
2 divisions.
What are mutations?
Changes in the DNA sequence.
What are the nitrogenous bases bonded with?
Hydrogen bonds.
Example of multiple alleles?
Blood types, rabbits...
What are the chances for a homozygous recessive offspring?
25%
How many cells does mitosis produce?
2 diploid cells.
Deletion and Insertion, since they both change the whole pattern of the DNA.
Which nitrogenous bases match?
Adenine and Thymine, Guanine and Cytosine
What is codominance?
When two dominant genes are expressed.
How many alleles per gene?
2.
How many cells are made from meiosis?
4 haploid cells.
Types of DNA mutations?
Substitution, deletion, insertion, and inversions.
What is DNA made of?
Sugar, phosphate, and nitrogenous bases.
What is incomplete dominance.
Incomplete dominance is when two genes aren't fully expressed.
What is the phenotype ratio of the offspring of heterozygous parents?
3:1
Which phase do chromosomes duplicate?
Interphase.
Deletion, duplications, inversion, and translocation.
What are the purines and pyrimidines?
Adenine and Guanine. Thymine and Cytosine.
What are multiple alleles?