asu bio 182 exam 1 and practice exam newest actual
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39 Multiple choice questions
Term 1 of 39
When does segregation in alleles happen?
Segregation is the process of dna replication before cell division.
Segregation happens during fertilization when gametes combine.
Segregation reflects the separation of homologous chromosomes during anaphase I of
meiosis.
Segregation occurs when traits are blended in offspring.
Term 2 of 39
In this example of freckles, MCR1 is the ______ and the freckles is the _______.
Chromosome, gene
Central dogma
Genotype, phenotype
Allele, trait
Definition 3 of 39
an individual's observable traits
Heterozygous
Alleles
Gene
Phenotype
,Definition 4 of 39
three or more forms of a gene that code for a single trait
Gene
Incomplete Dominance
Heterozygous
Multiple Alleles
Definition 5 of 39
The different forms of a gene present on each copy of the same chromosome
Alleles
Homozygous
Genotype
Heterozygous
Definition 6 of 39
The allele needs to turn on the dominant trait, for example if there is no gene coding a protein to
have a dominant purple trait, then it will just be the recessive white trait. Which is why only one
dominant gene is needed for a phenotype.
What makes an allele dominant?
Mutation Fun Facts:
Pedigree - X-Linked Recessive
Pedigree - X-Linked Dominant
, Term 7 of 39
Genotype
an individual's observable traits
DNA segment that codes for a protein
an individual's observable traits
the genetic makeup of a cell or organism
Term 8 of 39
Different Types of Mutations:
Every Generation, Males/Females, No unaffected parents having affected
children
Recessive gene is carried on the X chromosome
MORE MALES ARE AFFECTED
NO male-to-male transmission of trait
F: two copies of gene to express
M: one copy of gene to express
** CARRIERS -- Females w/only 1 copy of gene
-substitution
-insertion
-deletion
-frame shift
•Tend to skip generations
•More likely to appear among progeny of related individuals
•Usually appears with equal frequency in men and women
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