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WorksheetsHeredity, Genes, Traits, & Punnett Squares
Total questions: 21
Worksheet time: 2hrs 45mins
Both genotypes (AA) and (aa) are considered...
Homozygous
Heterozygous
Which ratio of the offspring from the cross will be homozygous recessive for the trait of tallness?
0 : 4
1 : 4
2 : 4
4 : 4
Which of the following genotypes is homozygous dominant?
Ae
Which of the following genotypes is homozygous recessive?
Ww
W
WW
ww
Which of the following genotypes is heterozygous?
In a heterozygous genotype, the ___________ allele will show in the phenotype.
In order for the dominant trait to present in the phenotype- a genotype MUST HAVE at least....
2 uppercase alleles
1 uppercase allele
2 lowercase alleles
1 lowercase allele
What are the phenotype percentages of the offspring?
(A-Brown fur color; a-white fur color)
50 % Brown fur and 50% White fur
25 % Brown fur and 75% White fur
75 % Brown fur and 25% White fur
0% Brown fur and 100% White fur
Who is considered the "father of genetics"?
Reginald Punnett
Gregor Mendel
James Watson
Charles Darwin
How many alleles are paired in a typical genotype?
1
2
3
4
What is the genotypic ratio of the offspring?
3:1
1:3
1:2:1
2:2
In a flowering plant species, red flower color (R) is dominant over white flower color (r).
to produce offspring with white flowers- what is one possible cross you could do? (you may need some paper to work these out)
Rr x Rr
RR x RR
RR x Rr
In a population of rabbits, straight ears (E) are dominant over floppy ears (e).
Which parent crossing would produce 75 % straight-eared offspring and 25% floppy ears (you may need some paper to work these out)
EE x EE
Ee x Ee
EE x ee
ee x ee
A gene is described as...
A change in DNA structure
An observable trait
A segment of DNA
A type of protein
an observable characteristic
trait/phenotype
gene
allele
DNA
What determines your traits?
DNA
chromosomes
Cells
Proteins
Different versions, or variations of genes that form genotypes are called?
Traits
Chromosomes
Alleles
Mutations
The pairs of alleles that an organism's genes have
genotype
phenotype
chromosome
recessive
