Lecture 2.6 - IB 150 Pattens of Inheritance Questions With
Complete Solutions
A true-breeding culture can only exclusively consist of each one
of which of the following genotypes? Correct Answers AA and
aa
→ Note: True-breeding lines HAVE to be homozygous strains.
breeding Correct Answers artificial selection on naturally
occurring genetic variation
→ main area of interest for genetics
Identifying X-linked traits from pedigrees Correct Answers ∙
Sex-linkage patterns on pedigrees
→ Queen Victoria- Family Tree example
∙ Females rarely show X-linked trait, and males usually always
do
independent assortment Correct Answers pair of alleles will be
sorted independently of one another when gametes are formed
law of independent assortment does... Correct Answers NOT
always hold
law of segregation always... Correct Answers holds
Mendel's 2nd law: deducing the Law of Independent Assortment
Correct Answers ∙ Law of Independent Assortment is a direct
consequence of how two or more genes with loci on different
chromosome types get reshuffled via independent assortment,
based on which homolog of each chromosome type aligns
, randomly to the left or right of the metaphase plate during
meiosis 1 prior to being segregated into the two daughter cells
Mendel's First Law: deducing the Law of Segregation Correct
Answers ∙ Gregor Mendel
→ famous for experiments on the pattern of inheritance of traits
in peas
→ Mendelian Laws of Inheritance
∙ Mendel's First Law, Law of Segregation
→ deals with patterns of inheritance for single-gene traits
→ fruit fly experiment
Model of Inheritance: Autosomal Dominant Correct Answers ∙
affected individuals every generation
∙ shows up in both sexes equally
∙ 1/2 or more individuals affected every generation
Model of Inheritance: Autosomal Recessive Correct Answers ∙
recessive phenotype skips one or more generations
∙ both sexes affected equally
∙ less than half of offspring affected in most cases
Model of Inheritance: X-Linked Recessive Correct Answers ∙
higher mother to son inheritance
∙ phenotype expressed in males more than females
∙ skips generation
model organism Correct Answers an organism selected for
scientific study based on features that make it easy to work with
(ex: body size, life span) , in the hope that findings will apply to
other species
Complete Solutions
A true-breeding culture can only exclusively consist of each one
of which of the following genotypes? Correct Answers AA and
aa
→ Note: True-breeding lines HAVE to be homozygous strains.
breeding Correct Answers artificial selection on naturally
occurring genetic variation
→ main area of interest for genetics
Identifying X-linked traits from pedigrees Correct Answers ∙
Sex-linkage patterns on pedigrees
→ Queen Victoria- Family Tree example
∙ Females rarely show X-linked trait, and males usually always
do
independent assortment Correct Answers pair of alleles will be
sorted independently of one another when gametes are formed
law of independent assortment does... Correct Answers NOT
always hold
law of segregation always... Correct Answers holds
Mendel's 2nd law: deducing the Law of Independent Assortment
Correct Answers ∙ Law of Independent Assortment is a direct
consequence of how two or more genes with loci on different
chromosome types get reshuffled via independent assortment,
based on which homolog of each chromosome type aligns
, randomly to the left or right of the metaphase plate during
meiosis 1 prior to being segregated into the two daughter cells
Mendel's First Law: deducing the Law of Segregation Correct
Answers ∙ Gregor Mendel
→ famous for experiments on the pattern of inheritance of traits
in peas
→ Mendelian Laws of Inheritance
∙ Mendel's First Law, Law of Segregation
→ deals with patterns of inheritance for single-gene traits
→ fruit fly experiment
Model of Inheritance: Autosomal Dominant Correct Answers ∙
affected individuals every generation
∙ shows up in both sexes equally
∙ 1/2 or more individuals affected every generation
Model of Inheritance: Autosomal Recessive Correct Answers ∙
recessive phenotype skips one or more generations
∙ both sexes affected equally
∙ less than half of offspring affected in most cases
Model of Inheritance: X-Linked Recessive Correct Answers ∙
higher mother to son inheritance
∙ phenotype expressed in males more than females
∙ skips generation
model organism Correct Answers an organism selected for
scientific study based on features that make it easy to work with
(ex: body size, life span) , in the hope that findings will apply to
other species
