science

Question 1

allele

Answer 1

any of several forms of a gene, usually arising through mutation, that are responsible for hereditary variation.

Question 2

genotype

Answer 2

the sum total of genes transmitted from parent to offspring.

Question 3

phenotype

Answer 3

the appearance of an organism resulting from the interaction of the genotype and the environment.

Question 4

homozygous

Answer 4

having identical pairs of genes for any given pair of hereditary characteristics.

Question 5

heterozygous

Answer 5

Immunology. pertaining to an antigen that elicits a reaction in a nonspecific antibody.

Question 6

dominate trait

Answer 6

In genetics, a trait that will appear in the offspring if one of the parents contributes it. ( Compare recessive trait.)

Question 7

reccessive trait

Answer 7

3.

the condition of being definite, distinct, or clearly o

Question 8

mitosis

Answer 8

the usual method of cell division

Question 9

meiosis

Answer 9

consisting of chromosome conjugation and two cell divisions

Question 10

identical twins

Answer 10

one of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usually resemble each other closely.

Question 11

fraternal twins

Answer 11

one of a pair of twins, not necessarily resembling each other, or of the same sex, that develop from two separately fertilized ova.

Question 12

sex-linked disorder

Answer 12

disorder from your gender

Question 13

chromosomes

Answer 13

the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively.

Question 14

gene

Answer 14

a linear sequence of nucleotides along a segment of DNA that provides the coded instructions for synthesis of RNA

Question 15

DNA

Answer 15

deoxyribonucleic acid: an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms

Question 16

DNA replication

Answer 16

is the process of producing two identical replicas from one original DNA molecule. This biological process occurs in all living organisms

Question 17

doble helix

Answer 17

the spiral arrangement of the two complementary strands of DNA.

Question 18

chargaff’s rule

Answer 18

Structures cell membranes‎ Preventive and therapeutic effects‎‎

Question 19

mutation

Answer 19

a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome.

Question 20

deletion

Answer 20

type of chromosomal aberration in which a segment of the chromosome is removed or lost.

Question 21

insertion

Answer 21

the manner or place of attachment, as of an organ.

attachment of a part or organ, with special reference to the site or manner of such attachment.

Question 22

substitution

Answer 22

a person or thing acting or serving in place of another.