Genetics

Question 1

Gene

Answer 1

part of DNA that codes for protein
- diff versions = alleles

Question 2

Alleles

Answer 2

order of bases is slightly different
- therefore each allele codes for diff version of shame characteristic

Question 3

loci

Answer 3

fixed posi where 2 alleles are found
- human = diploid org ( have 2 copies of each chromo)

Question 4

genotype

Answer 4

org genetic constitution ( diff alleles org have )

Question 5

phenotype

Answer 5

expression of genetic constitution and it’s interaction with he envi
- characteristics org has as result of gene and envi

Question 6

Dominance

Answer 6

expressed in phenotype , even when there’s only one copy of it

Question 7

Recessive

Answer 7

when cha only appear in phenotype if 2 copies are present

Question 8

Co dominance

Answer 8

alleles ( both ) are expressed therefore neither one is recessive

Question 9

Homozygous

Answer 9

same alleles

Question 10

Heterozygeus

Answer 10

Diff alleles

Question 11

Monohybrid inheritance

Answer 11

inheritance of cha controlled by single gene ( eg: hair color )

Question 12

Monohybrid crosses

Answer 12

show us the likelihood of diff alleles of that gene being inherited by diff offspring

Question 13

Phenotypic ratios

Answer 13

if 2 mono cross with 2 heterozy parents - 3:1 ration ( do : recessive )

Question 14

Dihybrid inheritance

Answer 14

inheritance of 2 charac , which are controlled by diff gene

Question 15

Dihybrid crosses

Answer 15

show the likelihood of offspring inheriting cdertain combo of 2 cha from parti parents