WorksheetsNatural Selection & Heredity
Total questions: 20
Worksheet time: 10mins
When every organism of a species has died.
Evolution
Extinction
Natural Selection
Artificial Selection
Where the better adapted organisms survive to pass traits along to offspring.
Evolution
Extinction
Natural Selection
Artificial Selection
What is the advantage of having different shaped beaks?
To look different from other species.
To be able to eat the food readily available in the environment.
To protect itself against predators.
To protect itself against prey.
The theory of evolution by natural selection means that what is changing over time?
Hair color and eye color
The acquired traits of a population.
Attractive features.
The inherited traits of a population.
Why are adaptive traits more likely to be passed onto offspring?
Because they come from recessive alleles.
Because they are more likely to survive and reproduce.
Because they come from dominant alleles.
Because the trait is an acquired phenotype.
The passing of genetic material from parents to offspring.
allele
genotype
heredity
phenotype
Different versions (forms) of a gene.
heredity
allele
phenotype
genotype
The combination of alleles that you inherited from your parents. This is what you genes look like, the letters. ex. Gg
heredity
allele
phenotype
genotype
The observable traits. This is what you physically look like, or what gene is expressed. ex. Round Yellow
heredity
allele
phenotype
genotype
An organism with two dominant or two recessive alleles. Or same.
heterozygous
homozygous
heredity
phenotype
An organism with one dominant and one recessive allele. Or different.
heterozygous
homozygous
heredity
phenotype
This allele contributes to the phenotype if one or two copies of it are present. HH or Hh the capital letter is what?
dominant
allele
recessive
genes
This allele contributes to the phenotype only if two copies of it are present. hh or the lower case letter is what?
dominant
allele
recessive
gene
What is the yellow seed genotype?
aa
AA
Aa
AA or Aa
What does a Punnett Square do?
tell you exactly what your offspring will look like
predict genotypes and phenotypes in offspring
increase the chance you pass on recessive traits
have no purpose but for Ms. James to give us extra assignments
What percentage of the off-springs will inherit the recessive allele?
25%
50%
75%
100%
What percentage of the off-springs will inherit the dominant allele?
25%
50%
75%
100%
Based on the genotypes of the off-springs in the Punnett Square, what is the genotype of the mother?
BB
bb
Bb
BG
Based on the outcome of the traits of the off-springs in the Punnett Square, what percentage of them will have homozygous recessive genotypes?
25% will have homozygous recessive genotype
50% will have homozygous recessive genotype
75% will have homozygous recessive genotype
100 % will have homozygous recessive genotype
In the Punnett Square, the recessive allele "b" represents blue eyes, and the dominant allele "B" represents dominant Brown eyes. What will be the phenotypes of the off-springs based on the Punnett Square?
25% will have blue eyes, 75% will have Brown eyes
50% will have blue eyes, 50% will have Brown eyes
75% will have blue eyes, 25% will have Brown eyes
100 % will have blue eyes
100% will have brown eyes
