Biology Semester 1 2024

Front

What event during meiosis leads to a reduction in chromosome number from 2n to n?

Back

Homologous chromosomes travel to opposite sides of the cell.

Front

What must happen to inherited instructions before they can pass from a parent cell to its offspring cells?

Back

They must be accurately replicated.

Front

What is the genetic code of life in the DNA molecule?

Back

The sequence of nitrogen bases.

Front

What explains the variation in traits like eye color and hair color among individuals?

Back

The inherited traits of individuals are determined by different gene combinations.

Front

What is the term for the movement of material across a membrane that requires energy?

Back

Active transport.

Front

What is meiosis?

Back

A type of cell division that reduces the chromosome number by half, producing four haploid cells.

Front

What are homologous chromosomes?

Back

Chromosomes that have the same sequence of genes and the same structure.

Front

What is DNA replication?

Back

The process of making a copy of DNA before cell division.

Front

What are nitrogen bases?

Back

The building blocks of DNA, consisting of adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the role of genes?

Back

Genes are segments of DNA that contain the instructions for making proteins.