AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following terms refers to a segment of DNA the controls the expression of a trait?
A
Chromosome
B
Chromatid
C
Gene
D
Histone
Explanation: 

Detailed explanation-1: -Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person’s genes.

Detailed explanation-2: -Genes are small sections of DNA within the genome that code for proteins. They contain the instructions for our individual characteristics – like eye and hair colour.

Detailed explanation-3: -Segments of DNA that carry genetic information are called genes, and they are inherited by offspring from their parents during reproduction.

Detailed explanation-4: -Epigenetic gene regulation Epigenetic modifications are also a key factor in influencing gene expression. They occur on genomic DNA and histones and their chemical modifications regulate gene expression in a more efficient manner.

Detailed explanation-5: -The sequence of nucleotides in DNA genes determines the order of amino acids in a protein. This is the direct connection between your genes and your traits.

There is 1 question to complete.