A region of DNA on a chromosome that specifies a trait
New organisms produced by a living thing
What are traits?
Alternative forms of a gene
Structure of DNA and protein
Characteristics that can be passed from one generation to another
Type of cell division resulting in four daughter cells
How What letter is used to represent a dominant allele?
Uppercase (R)
Lowercase (r)
What is the role of DNA in an organism?
Aids digestion
Supplies energy
Carries genetic information
Fights infection
Which term refers to the different forms a gene can take?
Recessive
Alleles
Dominant
Offspring
What is a recessive allele?
Only expressed (shown) when the dominant allele is not present
Dominant form of gene
Always expressed when present
the uncommon allele
What is a dominant allele?
Expressed when organism is homozygous for that allele
Produced by a living thing
the common allele
Always expressed when present
What is the term for new organisms produced by a living thing
Offspring
Genotype
Phenotype
Chromosome
Match the correct term with the correct definitions
Homozygous
The genetic make-up (the assemblage of alleles) of an individual
Genotype
The physical expression of an organism's genes
Heterozygous
Possessing a pair of identical alleles for a particular gene
Phenotype
Possessing a pair of unlike alleles for a particular gene
Select the terms that also mean Heterozygous
Hybrid
Carrier
Bb
Mudblood
Select the terms that also mean Homozygous
Recessive trait is shown
BB or bb
Carrier
Pureblood
What genotype represents a homozygous dominant for round seeds? (R=Round, r=wrinkled)
Rr
rr
RR
rR
What is the probability of producing a wrinkled seed from a cross of RR and Rr?
R=Round seed and r = wrinkled seed
0%
25%
100%
50%
How many alleles make up a genotype?
1
2
3
4
What percent chance will the offspring have a Qq when one parent is QQ and the other parent is qq. (Q = Green eyes, q= Blue eyes)
100%
75%
50%
25%
0%
In humans, the presence of dimples, D, is dominant over the absence of dimples, d. Bob has no dimples, his wife Bobina has dimples, but Bobina's mom Bobolina has no dimples. Construct a Punnett square showing the possible genotypes of Bob and Bobina's children.
What is the probability of Bob and Bobina's children having dimples?
0%
25%
50%
67%
75%
100%
If (H) is dominant for curly hair, and (h) is straight hair.
What are the possible genotypes for the offspring of a father who has straight hair, who’s mother had curly hair and the mother with curly hair whose father has straight hair.