Genetics 1
The characteristics of an organism.
What are traits?
This gene always shows is self over a recessive gene
What is a dominant gene?
All human cells contain _________ chromosomes
What is 46?
Organized display of an organism's chromosomes.
What is karyotype?
a capital letter represents what type of trait?
What is a dominant trait?
The passing of traits from parent to offspring is called.
What is heredity?
This describes two of the same copies of a gene
What is homozygous?
The four nitrogen bases found in RNA.
What are adenine, guanine, cytosine, and uracil?
holds chromatids together
what is the centromere?
Heterozygous parents are crossed. What percent of offspring will be homozygous dominant?
What is 25%?
What does DNA stand for?
Deoxyribonucleic Acid
This describes different alleles for the same trait.
what is heterozygous?
This is an organism's genetic makeup.
Genotype
Where are chromosomes located?
What is the nucleus?
What percent of the offspring of a cross of heterozygous parents will be homozygous?
What is 50%?
Chromosomes are made up of _______.
What is DNA?
Shows possible gene combinations.
What is a Punnett square?
This is an organism's physical appearance.
what is a Phenotype
genes of a trait that is hidden when the dominant gene is present
What is a recessive gene?
What percent of the offspring of a cross of heterozygous parents will be heterozygous?
What is 50%?
Sequence of nucleotides in DNA.
Gene
Sequence of three nucleotides
codon
One of two or more forms of a particular gene
What is an allele?
What percentage of two homozygous parents will be heterozygous?
What is zero percent?
What percent of the offspring of heterozygous parents will be homozygous recessive?
What is 25%