Genetics Unit Lesson 1 & 2 & 3

Front

What is a hybrid in genetics?

Back

A hybrid is an organism that has two different alleles for a trait, not one that consistently produces offspring with the same traits as the parent.

Front

What is a dominant trait?

Back

A dominant trait is a genetic factor that blocks another genetic factor and is commonly expressed in the phenotype.

Front

What is a recessive trait?

Back

A recessive trait is a genetic factor that is masked by a dominant trait and is less commonly expressed in the phenotype.

Front

What does a heterozygous genotype indicate?

Back

A heterozygous genotype has two different alleles for a trait, resulting in the dominant trait being expressed in the phenotype.

Front

What is tRNA?

Back

tRNA (transfer RNA) brings the appropriate amino acids to the ribosome based on the sequence of the mRNA.

Front

What is rRNA?

Back

rRNA (ribosomal RNA) is a component of ribosomes and helps connect amino acids together to form proteins.

Front

What is cross-pollination?

Back

Cross-pollination is the transfer of pollen from the stigma of one flower to the stigma of a different flower.

Front

What is the role of alleles in genetics?

Back

Alleles are different forms of a gene that determine specific traits in an organism.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits expressed by that genotype.

Front

What is a Punnett square used for?

Back

A Punnett square is a tool used to predict the genetic outcomes of a cross between two organisms.