important genetic terms

Question 1

define alleles

Answer 1

different form of genes
located at the
same locus

Question 2

define locus

Answer 2

Is the location occupied
by a gene on
a chromosome

Question 3

define genotype

Answer 3

individual genetic makeup

Question 4

define phenotype

Answer 4

outward manifestations of a disease

Question 5

what does a phenotype result from

Answer 5

genotype and the environment

Question 6

how many genes does an individual have per cell
and what are the 2 types of ways can the gene be

Answer 6

2 genes per cell, 1 from each parent. May be
heterozygous/homozygous

Question 7

describe heterozygous locus

Answer 7

dominant genes mask recessive gene (allele with
observable effect

Question 8

what is the only way a recessive gene can be expressed

Answer 8

when they are present in 2 copies

Question 9

in genetics is the dominant allele a capital letter or lowercase letter

Answer 9

capital

Question 10

in genetics is the recessive
allele a capital or lowercase letter

Answer 10

lowercase letter

Question 11

describe a carrier

Answer 11

Has a disease allele but is phenotypically normal

Question 12

what can a carrier pass on to their offspring

Answer 12

disease