Genetics

Question 1

Define allele

Answer 1

It’s an alternative version of a gene

Question 2

Define homozygous

Answer 2

Two copies of the same allele for a gene

Homozygous dominant: AA
Homozygous recessive: aa

Question 3

Define heterozygous

Answer 3

Two copies of different alleles for a gene

Aa

Question 4

Define dominant and recessive

Answer 4

Dominant: an allele expressed in a heterozygous
Recessive: an allele that is hidden in a heterozygous

Question 5

Define genotypes

Answer 5

Genotypes is the combination of alleles

AA, Aa, aa

Question 6

Define phenotypes

Answer 6

Appearance

Tall,dwarf etc.

Question 7

What is mitosis

Answer 7

It’s when a cell reproduces itself by splitting to form two cells with identical sets of chromosomes

Question 8

What is meiosis

Answer 8

• It only happens in reproductive organs

* It produces four haploid cells whose chromosomes are not identical

Question 9

Define haploid and diploid

Answer 9

Haploid: don’t have chromosome pairs
Diploid: do have chromosome pairs

Question 10

Define gene

Answer 10

A stretch of DNA that codes for a specific protein