Chaoter 19 Flashcards
Individual who possesses two different allies for a particular gene is referred to as
Heterozygous
This type of inheritance is called
Codominance
An individual with the genotype XXY would have ____ chromosomes and phenotypically would be a _____
47
Male
Tay-Sachs disease is inherited as an autosomal recessive disease. What is the probability that they will have a child with this disease
25%
Hemophilia is an X-linked recessive disorder a daughter can be affiliated with hemophilia if she inherits
An xh allele from her dad and mom
If a female inherits and expresses an X-linked recessive disorder what must be true about her parents
Father has the disease
Then hair and sense of phenotypic traits that depends on many genes is called
Polygenic inheritance
Which of the following conditions is caused by “trisomy 21”
Down syndrome
What could be said of the jeans for two different traits that always appear together
These are linked genes on the same chromosome
Which of the following does not apply to the sex chromosome X and Y
They are autosomes
PKU is an inherited disease that causes serious mental retardation shortly after birth. PKU
Is a homozygous recessive condition in which individuals accumulate too much of the amino acid
Genotype is determined by the interaction of phenotype and the environment
False
For genes that show complete dominance
True
Dominant alleles are always more common in a population than recessive alleles
False
The Y chromosome contains a gene that leads to the development
True
