Unit 2 variation and inheritance

Question 1

Variation

Answer 1

Combining genes from 2 parents within a species

Question 2

Discrete varaition

Answer 2

Single gene inheritance

Discounting pattern

Eg rolling tongue

Question 3

Continuous variation

Answer 3

Large range of variation

Eg height

Question 4

Allele

Answer 4

A form of gene

Question 5

Discontinuous

Answer 5

Variation that is clear cut and observable eg physical traits

Question 6

Domanant

Answer 6

Form of gene that is expressed in the phenotype

Question 7

Genotype

Answer 7

Alles that an organism has for particular characteristic

Question 8

Heterozygous

Answer 8

Genotype in which 2 alleles for the characteristics are different

Question 9

Homozygous

Answer 9

Genotype in which 2 alles for the characteristic are the same

Question 10

Mono hybrid cross

Answer 10

Cross set up to study inheritance of contrasting characteristics caused by alleles of the same gene

Question 11

Phenotype

Answer 11

Visible characteristics

Question 12

Ploygenic

Answer 12

Inheritance detrmined by the interaction of. Several genes acting together

Question 13

Recessive

Answer 13

Alllele of a gene that only shows in the phenetype in the genotype is homozygous for that allele

Question 14

Family tree

Answer 14

Identification of phenotype and genotype from them