Inheritance and Variation Definitions

Question 1

Gene

Answer 1

a line of descent traced continuously from an ancestor.

Question 2

Allele

Answer 2

different forms of the same gene

Question 3

Chromosome

Answer 3

thread-like structures in the nucleus. Composed of SNA and proteins; contains the genetic information in the form of genes.

Question 4

Autosome

Answer 4

all the chromosomes in a cell other than sex chromosomes.

Question 5

Nucleotide

Answer 5

the building blocks of DNA

Question 6

DNA (Deoxyribonucleic acid)

Answer 6

a nucleic acid wth deoxyribose sugar and phosphate as the backbone; the molecule that determines the genetic characteristics.

Question 7

Replication

Answer 7

the process of making copies of DNA

Question 8

Chromatid

Answer 8

one of the strands of a chromosome following replication.

Question 9

Centromere

Answer 9

the point on a chromosome where the two chromatids joined together.

Question 10

Homologous (chromosomes)

Answer 10

chromosomes with genes for particular charachteristics at the same location.

Question 11

To be continued

Answer 11

… :P