Vocab
Physical characteristics or traits of an organism.
What are phenotypes?
A Punnett square is used to determine this.
What is the probable outcome of a cross?
Term used to refer to a cell that contains only a single set of genes.
What is homozygous?
Having two different alleles for a particular gene.
The genetic makeup of an organism.
What is genotype?
In a single factor cross, each box on the Punnett Square is worth this percentage.
What is 25%?
During this stage of meiosis I, crossing over occurs.
What is Prophase I?
What is the dominant allele?
Different forms of a gene are called.
What are alleles?
This type of genotype consists of a capital and a lowercase letter. (ex. Ff or Gg)
What is heterozygous?
An organism with the diploid number 2N = 8, has gametes with this many chromosomes.
What is 4?
A factor that is passed from parent to offspring.
What is a gene?
In a genetic cross of alleles expressing this trait, the phenotypes produced by both alleles are clearly expressed.
What is codominance?
During sexual reproduction, male and female reproductive cells join in this process to produce a new cell.
What is fertilization?
This "type of genotype" consists of two capital letters, (ex. TT or PP).
What is homozygous dominant?
The process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
What is meiosis?
The separation of alleles during gamete formation.
What is segregation?
This trait will only show up when the dominant is not present.
What is the recessive allele?
Chromosomes where one set comes from the male parent and one set comes from the female parent.
In a cross between a homozygous dominant male (ex. TT) and a homozygous recessive female (ex. tt), all of the offspring will be this.
What is heterozygous? (Also accept hybrid)
Meiosis in mammals results in the formation of this.
What are four haploid gametes?
The likelihood that a particular event will occur.
What is probability?
This principle states that some alleles are dominant and some are recessive.
What is the principle of dominance?