Types of Mutations
What is a insertion mutation
When an extra nucleotide is added to a DNA sequence
What is a change in the sequence of a DNA strand?
Mutation
Which of the following alleles are dominant
R or r
Big R
Meiosis results in:
4 genetically different cells
What is the name of Mrs. Matthias' cat
Georgia
What is a deletion mutation
When 1 or more nucleotide is deleted from the DNA sequence.
One of the main sources of genetic variation
Mutations
A child displays the phenotype of blue eyes what is their genotype
bb
The cells that meiosis occurs in are:
Gamets
What are the 3 main causes of genetic variation.
Recombination in meiosis
Errors in DNA replication
Mutations from external factors
What is a silent mutation
A mutation that does not affect the outcome of the amino acids
List 3 external causes for mutations
Exposure to dangerous chemicals
Exposure to Radiation
Exposure to infectious diseases
Describe the difference between a phenotype and a genotype.
Phenotype is the physical trait expressed.
Genotype are the alleles you possess.
The phase in which chromosome crossover is
Prophase 1
Chromosomal Inversion
When part of the chromosome flips within the chromosome
Can mutations be passed down generation to generation. (Bonus points available.)
Yes, this is called epigenetic genes.
If two parents have brown eyes is it possible for their child to have blue eyes why or why not.
Yes, if both parents carry a blue eyed gene then they have a 25% chance of having a child with blue eyes.
What causes each cell in meiosis to be different
Crossing over and trading DNA in Prophase
Nucleotide bases may be inserted, deleted, or mismatched into the DNA strand incorrectly. What is this called.
A mutation that alters the outcome of more than one amino acid.
Frameshift.
The rise of a new phenotype is called:
A mutation
Parent 1 has the genotype ee with the phenotype of attached ear lobes and one has the genotype Ee and has detached ear lobes.
What percent of the offspring will exhibit attached ear lobes.
50%
Two siblings from the same parent look and act very differently. What is the cause of this.
Each time a gamete is made they undergo meiosis. During meiosis crossing over of genes causes each gamete to be genetically different.