Inheritence

Question 1

Diploid

Answer 1

An organism with a pair of homologous chromosomes, it has two alleles of each gene

Question 2

Gene

Answer 2

A sequence of DNA that codes for a protein

Question 3

Allele

Answer 3

A variation or version of a gene

Question 4

Genotype

Answer 4

The combination of alleles that an organisms has

Question 5

Phenotype

Answer 5

The physical expression of the genotype and its interaction with the environment

Question 6

Dominant allele

Answer 6

An allele that is always expressed in the phenotype

Question 7

Resessive allele

Answer 7

alleles that are only expressed when homozygous

Question 8

Co dominant allele

Answer 8

Both alleles are expressed in phenotype, phenotype is intermediate

Question 9

Homozygous

Answer 9

When both alleles are the same

Question 10

Heterozygous

Answer 10

When alleles are not the same

Question 11

Locus

Answer 11

The location of the gene on the chromosome

Question 12

Monohybrid inheritance

Answer 12

Inheritance of a characteristic controlled by a single gene

Question 13

What is the outcome of F1 generation in monohybrid inheritance

Answer 13

100% heterozygous
Genotype- different
Phenotype- dominant

Question 14

Dihybrid inheritance

Answer 14

Inheritance of two characteristics that are controlled by separate genes

Question 15

Epistasis

Answer 15

An interaction of genes… when the expression of one gene suppresses the expression of another gene, when a phenotype is controlled by more than one gene

Question 16

Autosome

Answer 16

All the non sex chromosomes

Question 17

Autosomal linkage

Answer 17

Means that more offspring will have the same phenotype and genotype as their parents unless the alleles are separated during crossing over

Question 18

What are the characteristics of autosomal linkage

Answer 18

Genes that are on the same autosome are linked, they will be inherited together, affects the expected phenotypic ratio from dihybrid cross

Question 19

What happens if the closer the locus of genes on an autosome are

Answer 19

The more closely linked they are

Question 20

Homologous pair

Answer 20

Diploid organisms in are pairs of organisms, same genes but different alleles

Question 21

Sex linkage

Answer 21

The expression of the allele located in the sex chromosome depends on the sex of the individual