If a gene is always expressed or always shown with a capital letter it is
What is cross pollination?
A. When pollen from a flower fertilizes itself or another flower on the same plant
B. When pollen from one flower fertilizes a flower on a different plant
C. A plant whose offspring share the same traits as the parent
D. A plant whose offspring is genetically different from the parent.
Every living thing has genetic information stored in the form of
A unit of genetic material or factor that determines a trait
Which sentence is FALSE?
A. All organisms have 23 pairs of DNA.
B. Chromosomes are made of genes.
C. DNA is made out of 4 chemicals: adenine, cytosine, thymine, guanine
D. DNA is the recipe for life.
A trait that is always hidden when the dominant allele is present.
B. Recessive allele
Which would be an example of a trait shaped by their environment?
A. Eye color
B. Hair color
C. Language they speak
When the doctor operates on the patient’s eye, he is using
A. learned behavior.
B. acquired physical trait.
C. inherited physical trait.
Which of the following is heterozygous or one dominant and one recessive allele?
Where are chromosomes found?
B. cell membrane
Different versions or forms of the same gene are called –
B. sex cells
C. nitrogen bases
Which is heterozygous ?
The inherited combination of alleles is known as the offspring’s
The passing of physical characteristics, or traits, from parent to offspring.
B. Dominant allele
D. Recessive allele
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered….
A. Incomplete Dominance
The different forms of a gene.
If you cross two heterozygous pea plants that are tall, what is the probability they will have offspring that are tall?
A. one in four
B. two in four
C. four in four
D. three in four
If two alleles are the same for a certain trait they are considered
The scientific study of heredity.
An organism that has two different alleles for a trait.
D. Dominant allele
A. Found in the mitochondria
B. Made of 20 pairs
C. Long strands of DNA that contain many genes
D. Bundles of DNA that contain only one gene each
What is NOT an inherited trait of humans?
A. Favorite type of music
C. Hair color
Juan’s dog, Luna, was hit by a car. Fortunately, she lived and is healthy! But she is now missing a leg. Having only three legs is a(n)
A. inherited trait.
B. learned behavior.
D. acquired trait.
An organism’s appearance is known as its
What is a gene?
A. An entire chromosome that codes for a trait
B. a piece of clothing
C. a piece of a DNA on chromosome that codes for a trait
D. Chemical messengers in your brain that code for a trait
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