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Bio I Ch. 14

Ch. 14

QuestionAnswer
Give two reasons why it is almost impossible to associate many human traits with single genes. polygenic and environment
How are karyotypes of chromosomes laid out? largest to smallest
Aa - Is this a genotype or phenotype? genotype
How many chromosomes are in a normal human karyotype? 46
What sex chromosome is found in the female egg only. X
In a pedigree, what represents a male? box
In a pedigree, what represents a female? circle
Huntington's, PKU, and Tay-Sachs. Which is caused by a dominant allele? Huntington's
A human sperm cell can have an _____________ sex chromosome. X or Y
Rh blood group, ABO blood group, PKU, and Huntington's. Which is controlled by multiple alleles? ABO blood group
Compared with normal hemoglobin, the hemoglobin of a person with sickle cell disease has a different ______________ of amino acids. sequence
Sickle cell disease is caused by a small change in the DNA of a single _________. gene
A person with alleles ii has blood type ____________. O
The process of _____________________ is used to identify a person based on DNA evidence. DNA fingerprinting
The human genes for color vision are located on the ______ chromosome. X
A(n) _________ is a diagram that follows the inheritance of a single gene through several generations of a family. pedigree
A person with ________ is unable to break down the amino acid phenylalanine. PKU
Barr bodies are formed in ________________ sex cells. female
True or False Sex-linked genes are found on autosomes. false
The purpose of gene therapy is to cure _____________ disorders. genetic
The Human Genome Project is an attempt to analyze human _________________. DNA sequence
The failure of chromosomes to separate during meiosis is called ____________. nondisjunction
What causes cystic fibrosis in human DNA gene sequences. deletion of 3 bases
Created by: macjlc13