22 terms

Genetics Test

STUDY
PLAY
Dominant
observed trait of an organism that masks the recessive form of a trait
Recessive
trait of an organism that can be masked by the dominant form of a trait
Purebred/ Homozygous
an organism with two dominant or two recessive genes for a trait
Hybrid/ Heterozygous
having two different genes (1 dominant & 1 recessive)
Chromosomes
threadlike structures in the nucleus of a cell that control heredity
Probability
likelihood that a particular event will occur
DNA
deoxyribonucleic acid, the material that contains the information that determines inherited characteristics
Genes
the basic building blocks of heredity
Trait
a characteristic that an organism can pass on to its offspring through its genes.
Genotype
genetic makeup of an organism
Phenotype
an organism's physical appearance, or visible traits.
Mitosis
A process of cell division that forms two new cells, each of which has the same number of chromosomes
Meiosis
a process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the cell, which results in the production of sex cells (gametes)
Mendel
is the Father of Genetics. He was an Austrian monk who studied pea plants in order to look at the characteristics that were passed from one generation to the next.
Mutation
Any permanent change in a gene or chromosome of a cell; may be beneficial, harmful, or have little effect on an organism.
Replication
the process by which a cell makes a copy of the DNA in its nucleus
XX Chromosomes
female
XY Chromosomes
male
number of chromosomes in human cells
46
number of chromosomes in human sex cells
23
Correct pairing of nitrogen bases
Cytosine to Guanine, Adenine to Thymine
Heredity
the passing of traits from parents to offspring