Genetics

Question 1

Chromatin Network

Answer 1

The long, twisted structure containing DNA in a cell’s nucleus during interphase.

Question 2

Chromosomes

Answer 2

There are 46 in humans, carrying DNA; visible during cell division (meiosis/mitosis).

Question 3

Genes

Answer 3

Segments of chromosomes coding for specific traits like height, eye color, hair texture.

Question 4

Alleles

Answer 4

Variations of genes, e.g., blue eyes allele, green eyes allele.

Question 5

Paternal and Maternal Chromosomes

Answer 5

Inherited from parents, separated during meiosis for gamete formation.

Question 6

Dominant Alleles

Answer 6

Expressed physically even when only one is present, represented by capital letters.

Question 7

Recessive Alleles

Answer 7

Require two copies for expression, represented by lowercase letters.

Question 8

Homozygous Dominant

Answer 8

Two identical dominant alleles (e.g., BB for brown eyes).

Question 9

Homozygous Recessive

Answer 9

Two identical recessive alleles (e.g., bb for blue eyes).

Question 10

Heterozygous

Answer 10

One dominant and one recessive allele (e.g., Bb).