inheritance

Question 1

Homologous Chromosomes

Answer 1

All cells in the body (besides gametes) contain 2 copies of each chromosome

1 copy from each parent

Question 2

Offspring

Answer 2

May inherit different alleles (versions of a gene)

Question 3

Law of Segregation
(Mendel’s Law)

Answer 3

Allele pairs seperate from each other during the production of gametes

Question 4

Law of Independent Assortment
(Mendel’s Law)

Answer 4

• The assortment of chromosomes for 1 trait doesn’t affect the assortment for another trait

Question 5

Pedigree

Answer 5

Used to determine individual genotypes

Follows Mendel’s laws

Question 6

Disorders

Answer 6

Some autosomal disorders in humans are controlled by a single gene

Most human genetic disorders are recessive

Some human genetic disorders are dominant

Lethal dominant alleles are less common than lethal recessive

Lethal recessives can be carried by heterozygotes

A dominant allele is not necessarily more common in a population than the recessive

Question 7

Incomplete dominance

Answer 7

Results in intermediate phenotypes

When an offspring’s phenotype is inbetween the phenotypes of its parents

Question 8

Phenotype

Answer 8

the observable traits of an organism

Question 9

Multiple alleles

Answer 9

Many genes have more than two alleles in the population for a specific trait

Question 10

Pleiotropy

Answer 10

A single gene may affect many phenotype characteristics
(Sickle cell, albinism, PKU)

Question 11

Polygenic inheritance

Answer 11

A single characteristic may be influenced by many genes