A gene affecting neurological function ( nervous system ) is defective
Huntington’s disease
is characterized by delayed clotting of the blood resulting an excessive bleeding
Hemophilia
Carries it carries a variety of genes that are necessary for the development of both females and males
X chromosome
both alleles are expressed in the heterozygous condition
codominance
The X-chromosome that stops working is called
Barr body
What is the resulting offspring if man with colorblindness crossed with woman that has also colorblindness ?
XbXb XbY
in which disease the gene that codes for a membrane protein is defective
cystic fibrosis
..........
B
What is the genotype of no baldness female ?
XBXB XBXb
is caused by absence of the gene that codes for the enzyme that breaks down of sugar
Galactosemia
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative . what is the genotype for the son?
IBi
The percentage of twins who both express a given trait is called
concordance rate
for the coat color of the rabbit , if the coat color is Himalayan , what possible genotypes could be ?
ChCh or Chc
in Epistasis , dark black color for Labrador retrievers represented by B and brown chocolate for b , if the phenotype is dark black , what possible genotypes are ?
BBEE or BbEE or BbEe
When does the process of dosage compensation or X-inactivation happen ?
at the early embryo
........
A
are used to infer genotypes from the observation of phenotypes
Inferring genotypes
Tay-Sachs is found on chromosome
15
.............
E
.......
C
Not all traits are determined by two alleles. Some forms of inheritance are determined by more than two alleles
multiple allele
states that a random distribution of alleles occurs during gamete formation.
independent assortment
What is the genotype of hemophilia male ?
XhY
C
B: dark black b : brown chocolate What is the phenotype of bbEe ?
yellow
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