Genes

Question 1

Phenotype

Answer 1

The physical trait that an organism displays (such as hair colour)

Question 2

Genotype

Answer 2

The genetic makeup, that allows an individual to have a certain trait (a certain gene for blue eyes)

Question 3

Allele

Answer 3

A variation of a gene

Question 4

2 main categories of genes

Answer 4

Dominant and Recessive

Question 5

Dominant gene

Answer 5

The gene that is expressed by an organisms offspring

Question 6

Recessive gene

Answer 6

The gene that is not displayed by an organisms offspring

Question 7

The 4 bases of DNA

Answer 7

• Adenine
  
  • Thymine
  • Cytosine
    
    • Guanine

Question 8

How many chromosomes are usually in a human being?

Answer 8

46

Question 9

How many pairs of chromosomes are usually in a human being?

Answer 9

23

Question 10

How many chromosome pairs are sex chromosomes?

Answer 10

1

Question 11

Punnet Square

Answer 11

A diagram that shows the probability of each genotype and phenotype in an offspring.

Question 12

Autosomes

Answer 12

Body chromosomes that make you human ( non sex, First 22 pairs )

Question 13

Sex Chromosomes

Answer 13

XX or XY ( 23rd pair ), determines the sex of the offspring

Question 14

Genome

Answer 14

The complete set of genetic instructions for an organism

Question 15

How many alleles do you need per trait?

Answer 15

2

Question 16

Homozygous

Answer 16

Having 2 of the same alleles

Question 17

Heterozygous

Answer 17

Having 2 different alleles