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19 questions
Gene variations from person to person is a(n)
Gene
Allele
Exome
Underlying instructions (alleles present)
Genotype
Phenotype
Gene pool
Gene expression (physical)
Phenotype
Mutation
Genotype
A _____ allele has an effect when present in just one copy (on one chromosome)
Dominant
Recessive
Multifactorial
The alleles for green hair is Gg. The phenotype is
Green hair
Gg
This chart is called a:
Pedigree
Punnett Square
Karyotype
The first generation in a genetic cross is the parental generation, or:
F1
F2
F3
A _____ allele must be present on both chromosomes of a pair to be expressed
Dominant
Recessive
Multifactorial
The alleles for green hair is Gg. The genotype is
Green hair
Gg
Offspring that inherit a different gene variant (allele) from each parent
Mutation
Hybrid
F3 generation
The masked trait is:
Recessive
Dominant
Any individual with two identical alleles for a gene is ____ for that gene
Homozygous
Heterozygous
An individual with two different alleles is _____ for that gene
Homozygous
Heterozygous
If both alleles are recessive, the individual is homozygous recessive, shown with
1 capital and 1 lowercase letter
2 capital letters
2 lowercase letters
An individual with two dominant alleles is homozygous dominant and has
1 capital and 1 lowercase letter
2 capital letters
2 lowercase letters
1 dominant and 1 recessive allele indicates a heterozygote has
1 capital and 1 lowercase letter
2 capital letters
2 lowercase letters
___ represents how genes in gametes join if they are on different chromosomes
Punnett Square
Pedigree
Karyotype
What is the phenotypic rule for a heterozygous crossed with another heterozygous in a dihybrid cross?
9:3:3:1
1:2:3:4
4:4:3:9
How many traits does a dihybrid look at?
1
2
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