Mendel and mutations Quiz

heterozygous

• a genotype of two alleles of the same gene (purebred)

• a genotype of different alleles of the same gene (hybrid)

• the study of heredity

• organized strands of DNA

phenotype

• the father of genetics

• genetic material that determines the traits of an organism

• The actual genes an organism has, represented by two letters

• the actual observed characteristics, physical appearance

A trait that disappears, the weaker gene

• Purebred
• Hybrid
• Dominant
• Recessive

chromosomes

• the father of genetics

• the passing on of characteristics from parents to offspring

• organized strands of DNA

• specific form of a trait

the genetic make-up; the alleles (letters)

• genotype

• phenotype

A section of a chromosome that carries the information for a specific trait like hair color or eye color

• heredity

• generation

• gene

• allele

How a trait PHYSICALLY appears in an organism

• heterozygous

• homozygous

• phenotype

• genotype

You have two alleles (letters) on each gene.  Where do your alleles come from?

• From the grandparent you most resemble
• Your parents
• Your siblings
• You make them by yourself

In pea plants, the trait for tall stems is dominant over the trait for short stems. If two heterozygous tall plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents?

• 100%
• 75%
• 50%
• 25%

In snapdragons, Tallness (T) is dominant to dwarfness (t). In a cross between two plants that are homozygous for the recessive allele, the percent of offspring expected to exhibit tallness is

•  25%
•  75%
• 100%
• 0%