Genetics: The Science of Heredity

The body cells of a grasshopper has ___ chromosomes

A _____ is one whose trait always shows up in the organism when the allele is present.

The order of the nitrogen bases along a gene forms a genetic code that specifies _____

A organism's phenotype is its physical appearance, or visible traits.

an organism that has two different alleles for a trait is called __-

A _is a chart, it shows all the possible combos of alleles that can result from a genetic cross

_____ carries amino acids to the ribosome and adds them to the growing protein.

Sutton found that grasshoppers has ___ sex cells.

Heterozygous is the same trait within an organism.

A ____ is any change in a gene or chromosome.

In codominance, the alleles are neither dominant nor recessive.

The chromosome theory of inheritance, genes are carried from parents to their offspring____

A purebred organisms is the offspring many generations that have the same trait.

Each different form of a characteristic, such as a stems height or color is called

Alleles are the same forms of a gene

_____ is the passing of physical characteristics from parents to offspring.

What is the scientific study of heredity?

Scientist use the word _______ for the factors that control a trait

Messenger RNA _____ the coded message from the DNA in the ____.

An organism's genotype is its genetic makeup, or allele combinations.

Two useful terms that geneticists use are ____ and ____.

An organism that has two identical alleles for a trait is said to be

Meiosis is the process by which the number of chromosomes is reduced by half to form____

In a genetic cross, the allele that each parent will pass on to its offsprings is based on