Heredity is the passing of genetic traits from ___________ to ___________
parent; offspring
100
Is the genotype "ee" heterozygous or homozygous?
homozygous
100
We represent dominant genes with a ___________ letter
Capital
100
What is a pedigree
A family tree of traits
200
All organisms have _______ copies of each gene
two
200
Who first studied heredity and the passage of traits from one generation to the next?
Gregor Mendel
200
Is the genotype "Dd" heterozygous or homozygous?
Heterozygous
200
Some genes can be hidden or covered up by another. These are considered to be ____________ genes.
Recessive
200
The father of genetics
Gregor Mendel
300
What are the threadlike structures of DNA that carry genes called?
Chromosomes
300
What type of organism did Gregor Mendel use to first study heredity?
Pea Plants
300
Brown eyes are dominant to blue eyes. What phenotype is expressed by "BB"?
Brown eyes
300
A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?
100%
300
The physical characteristics
Phenotype
400
A single gene is called a(n) _________
Allele
400
What do we call the physical appearance of a trait?
Phenotype
400
If purple flowers (P) are dominant to white flowers (p), name the possible genotypes for a purple flower.
PP or Pp
400
Having dimples is dominant (D). Not having dimples is recessive (d). Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?
25%
400
Having only 1 set of chromosomes
Haploid
500
What do we call the genetic make up of the individual, represented by a set of letters?
Genotype
500
How many chromosomes do humans have?
46 (or 23 pairs)
500
A heterozygous round seeded plant (Rr) is crossed with a
homozygous round seeded plant (RR). What percentage of the offspring will be homozygous recessive (rr)?
0%
500
Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygous reccessive (e), what is the only possible genotype of the offspring?
Ee
500
An arrangement of all of an individual's chromsomes in order from largest to smallest