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Chapter 4: Modern Genetics Review
An example of a trait that has multiple alleles.
If a person has the combination of alleles O and B what would their blood type be?
B blood type
Skin color and height are traits that show a large number of different phenotypes because they are controlled by _________.
many genes (polygenic inheritance)
The effects of genes are often changed by an organism’s ____________.
The body cells contain _____ chromosomes.
The sex cells contain ___ chromosomes.
The two sex chromosomes carried by a male are _____.
The two sex chromosomes carried by a female are ____.
Genes carried on the X or Y chromosomes are called _________.
An example of a condition that is sex- linked is ______.
Hemophilia or color-blindness
Sex-linked traits occur more often in ______, because they carry only one X chromosome.
A chart that tracks which members of a family have a particular trait is called a ________.
In a pedigree chart a square is a symbol for a _____.
A half-shaded circle on a pedigree chart would indicate a _________.
An abnormal condition that a person inherits through genes or chromosomes is a __________.
A genetic disorder in which a person’s blood clots very slowly or not at all is called ______.
People with an extra copy of chromosome 21 have a disorder called _________.
A person who has difficulty distinguishing between the colors red and green has the sex-linked trait called ________.
A picture of all the chromosomes in a cell is called a _________.
Professionals who help couples understand their chances of having a child with a particular disorder are called _________
A procedure in which fluid from a developing baby is removed to test for genetic disorders is called ________.
A genetic disorder in which the body produces abnormally thick mucus is called __________.
In _______, breeders cross two genetically different individuals.
A _____ is an organism that is genetically identical to the organism from which it was produced.
Inserting working copies of a gene directly into cells of a person with a genetic disorder is referred to as _______.
The process of selecting a few organisms with desired traits to serve as parents of the next generation is called _________.
The transfer of genes from one organism to another is called ________.
The crossing of two individuals that have identical or similar sets of alleles is called _______.
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