H. Biology Flashcard 12.3 and 12.4

Front

What assorts independently during meiosis?

Back

Chromosomes assort independently during meiosis.

Front

What is true of both meiosis and mitosis?

Back

Both are preceded by chromosome/DNA replication.

Front

What principle did Thomas Hunt Morgan's observations lead to?

Back

Gene linkage.

Front

What is it called when a gene has two or more alleles?

Back

Multiple alleles.

Front

What are traits produced by the interaction of several genes called?

Back

Polygenic traits.

Front

Define meiosis.

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical diploid cells, while meiosis results in four genetically diverse haploid cells.

Front

What is codominance?

Back

Codominance is a genetic scenario where both alleles in a heterozygote are fully expressed.

Front

What is incomplete dominance?

Back

Incomplete dominance is when the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What are homologous chromosomes?

Back

Homologous chromosomes are pairs of chromosomes that have the same structure and gene sequence, one inherited from each parent.