WorksheetsGenetics Review 2024
Total questions: 17
Worksheet time: 10mins
When an organism inherits two of the same alleles for a trait, they are
homozygous
identical twins
codominant
heterozygous
When an organism inherits two different alleles for a trait, they are
homozygous
siblings
codominant
heterozygous
Gregor Mendel established the idea of
incomplete dominance
sticky notes
codominance
dominant and recessive alleles
One homozygous parent has a small mouth. The other homozygous parent has a large mouth. Their heterozygous offspring has a medium-sized mouth. This is
simple dominance
codominance
incomplete dominance
What is a record of an organism's ancestors that gives information about the traits that may be passed down?
A Punnett Square
A pedigree
A karyotype
A diary
_______ occurs when a group of gene pairs act together to produce a single trait. It creates a lot of variety (fingerprints, skin color...)
Polygenic inheritance
Simple dominance
Codominance
Incomplete dominance
One homozygous parent has brown fur. The other homozygous parent has white fur. Their heterozygous offspring has white and brown fur. This is
simple dominance
codominance
incomplete dominance
What is a recessive genetic disorder?
A person must inherit two recessive alleles to have the disorder.
A person must be heterozygous to have the disorder.
A person must inherit two dominant alleles to have the disorder.
Can two organisms with different genotypes have the same phenotype?
Yes
No
Purple eyebrows are dominant over pink eyebrows.
If you are looking at a creature with purple eyebrows, can you know it's exact genotype?
Yes - It will be ee.
Yes, it will be EE.
No, it could be Ee or ee.
No, it could be EE or Ee.
Purple eyebrows are dominant over pink eyebrows.
If you are looking at a creature with pink eyebrows, can you know it's exact genotype?
Yes - It will be ee.
Yes, it will be EE.
No, it could be Ee or ee.
No, it could be EE or Ee.
Why do some identical twins start to look different over time?
Their genome (DNA code) changes.
They are changed by aliens.
Their environment can effect their epigenome.
Are most human traits able to be identified as dominant or recessive?
Yes
No
What is a genotype?
It represents the two alleles for a trait using letters.
It is the physical expression of a trait (how it looks).
It is a family tree that gives clues to the traits that might be passed down to the next generation.
It is Gregor Mendel's middle name.
What is a phenotype?
It represents the two alleles for a trait using letters.
It is the physical expression of a trait (how it looks).
It is a family tree that gives clues to the traits that might be passed down to the next generation.
It is Gregor Mendel's middle name.
Is it possible for someone to be a carrier for a gene or trait that they don't express themselves?
Yes
No
In sticky note plants, blue notes are dominant(B) over pink notes (b). A homozygous dominant plant can be shown as (a) a homozygous recessive plant can be shown as (b) , and a heterozygous plant is (c)
