science study for April 17

test

polygenic inheritance

when a single cell is controlled by 2 or more genes

alleles

are the different forms that may physically show from the same gene, influencing traits such as height or eye color. d

dna replication happens

during the S phase of the cell cycle or interphase

Who discovered that DNA molecules were in spiral form?

Rosalind Franklin discovered that DNA molecules were in spiral form.

What did James Watson and Francis Crick create?

James Watson and Francis Crick created a 3D model of DNA molecules.

Where are chromosomes found and what do they contain?

Chromosomes are found in the nucleus of a cell and contain a code in the form of a chemical known as DNA.

What does DNA stand for?

DNA stands for deoxyribonucleic acid.

How can the DNA molecule be described?

The DNA molecule is often described as a twisted spiral staircase.

What are the components of the DNA molecule's structure?

The handrails of the DNA molecule are made of sugar and phosphate, while the steps are made of the bases adenine (A), thymine (T), cytosine (C), and guanine (G).

What are genes?

Genes are segments of DNA.