Punnett Squares
A tool used to analyze the possible allele combinations of the offspring between two individuals
Punnett Square
The alleles that are inherited by organisms; represented with letters
Genotype
Will always be shown in an organism; it will reappear in offspring if one of the parents contributes it
Dominant Trait
A method of reproduction that requires only one parent
Asexual reproduction
The basic unit of heredity; controls a specific trait
Gene
Two parents are passing down traits for hair. The dominant trait is brown hair; the recessive trait is blonde hair. One parent has the following genotype for hair: Bb. The other parent has the following genotype for hair: bb. What is the probability of their offspring having blonde hair?
50%
The physical trait an organism inherits
Phenotype
Must be contributed to by both parents to appear in the offspring. An inherited trait only visible when two copies of that gene are present.
Recessive Trait
Any individual offspring produced through asexual reproduction is always
genetically identical to its parent.
A characteristic passed from parent to offspring
Inherited trait
How many possible offspring are predicted by Punnett Squares?
4
Dominant traits have what letters as genotypes?
Bb or BB
Dominant traits are represented by
Capital letters
A paramecium is a one-celled organism that replicates its nucleus and then splits in half, making two new cells. This is called
Binary fission
Long stands of DNA that contain lots of genes
Chromosomes
Parents have genotypes of BB and Bb. The dominant trait is brown eyes and recessive trait is blue eyes. What percentage of their children will have blue eyes?
0%
Recessive traits have what letters as genotypes?
bb
Recessive traits are represented with
If a sea star is cut apart, organisms will grow from each part that is still attached to the center ring. This is called
Regeneration
Different versions of a gene
Allele
Parents have genotypes of BB and Bb. The dominant trait is brown eyes and recessive trait is blue eyes. What percentage of their children will have brown eyes?
100%
Give an example of a genotype and phenotype.
Ex. Bb; purple flower
Which trait is most likely to present itself?
Dominant
A potato plant will reproduce a whole new plant by sprouting from the eye of the potato. This is called
Vegetative propagation
The differences that occur from a mixture of genes
Variation