Genetics 1
The unit that determines traits
gene
The man whom history credits as the founder of heredity, or, genetics
Gregor Mendel
An organism's complete genetic makeup. Or a specific genetic formation, such as a heterozygous form
genotype
The physical appearance of an organism; the outer expression of its genotype
phenotype
Melissa is tall; Pedro has brown eyes — for example.
traits
When any organism reproduces, it is what we call the new organism
offspring
The stronger of the two kinds of alleles
dominant allele
The weaker of the two kinds of alleles
recessive allele
The science founded by Mendel, what we now call the field of "genetics"
heredity
The grid where we determine each possible genetic outcome an offspring may have
Punnett square
A genotype that contains two of the same allele
homozygous genotype
How many TOTAL chromosomes does an individual have?
46
The classification of this genotype: pp
homozygous recessive
What does DNA stand for?
dioxyribonucleucacid
The classification of this genotype: BB
homozygous dominant
Which gender has one X chromosome and one Y?
MALE
A diagram or chart of the genetic history of a family over several generations is called?
A PEDIGREE
A particular form of a gene, such as the A in the genotype Aa
allele
If parent 1 has Bb for brown eyes and parent 2 is recessive, what percent of their children will have brown eyes?
50
Parent 1 is homozygous recessive for curly hair and parent 2 is homozygous dominant for straight hair. What percent of the children will have curly hair?
none, 0
What is it called when you cross 2 alleles or 3 alleles?
dihybrid or trihybrid
When a DNA gene is damaged or changed, this is called a _________________.
MUTATION
A cross between parents differing in only one trait is called a ________________________.
MONOHYBRID CROSS