inheritance

Question 1

Gene

Answer 1

a sequence of DNA that codes for a polypeptide and which occupies a specific locus on a chromosome

Question 2

allele

Answer 2

• a variant nucleotide sequence for a particular gene at a given locus, which codes for an altered phenotype
• diff forms of the same gene

Question 3

locus

Answer 3

the position of a gene on a chromosome

Question 4

genotype

Answer 4

the alleles which an individual contains

Question 5

phenotype

Answer 5

the expression of the genotype in a specific environment

Question 6

homozygous

Answer 6

the alleles of a particular gene are the same from both parents

Question 7

heterozygous

Answer 7

the alleles of a particular gene are different from both parents

Question 8

dominant

Answer 8

this allele is always expressed if present

Question 9

recessive

Answer 9

this allele is only expressed when it is homozygous

Question 10

mono hybrid inheritance

Answer 10

inheritance of a single gene

Question 11

co dominance

Answer 11

both alleles in a heterozygote are expressed individually ( both alleles at a locus on a chromosome are equally dominant)

Question 12

carrier

Answer 12

a phenotypically normal female with one normal dominant allele and one mutant recessive allele

Question 13

sex linkage

Answer 13

a gene is carried by a sex chromosome so that a characteristic it encodes is seen predominantly in one sex

Question 14

in a question they can say
why are they common phenotypes?

Answer 14

due to LINKAGE

Question 15

in a question they can say
why are they rare phenotypes?

Answer 15

due to CROSSING OVER