Genetics And Inheritance Terms

Question 1

List two thing about AUTOSOMAL RECESSIVE

Answer 1

1. Need two copies of the recessive allele to have the disorder/trait
2. Females and males are affected equally

Question 2

List 3 things about SEX-LINKED DOMINANT

Answer 2

1. Gene is located on the X chromosome
2. Need only one dominant allele to have the disorder/trait
3. All daughters of an affected male will be affected since the father has only the defective allele to give

Question 3

Define GENETICS

Answer 3

The science of hereditary dealing with resemblances and differences between one generation and its offspring

Question 4

Define INHERITANCE

Answer 4

The genetic characteristic transmitted form parent to offspring, taken collectively

Question 5

Define HETEROZYGOUS

Answer 5

Having dissimilar pairs of genes for any hereditary characteristic

Question 6

Define HOMOZYGOUS

Answer 6

Having two identical pairs of genes from any hereditary characteristics

Question 7

Define GENOTYPE

Answer 7

The makeup of an organism with reference to a single/set/complex of traits

Question 8

Define PHENOTYPE

Answer 8

The appearance of an organism from the genotype (or interaction of the genotype and the environment)

Question 9

Define ALLELE

Answer 9

All the possible forms of a gene, a gene contains a minimum of 2 alleles (often more)
Alleles always paired one from male and one from female
Dominant or recessive indicated with upper or lower case letters

Question 10

Define GENE:

Answer 10

Sequence of DNA expressed as a trait

Question 11

Define INCOMPLETE DOMINANCE

Answer 11

Both alleles are dominant but the phenotype is a BLEND between the two alleles of both parents

Question 12

Define CO-DOMINANCE

Answer 12

When an individual shows phenotypic effects of both alleles

Question 13

List two things about AUTOSOMAL DOMINANT

Answer 13

1. Need only one dominant allele to have the disorder/trait

2. Females and males are affected equally