Section 1

Question 0

George Mendel

Answer 0

• Study genetics in the 1850s and determine the laws of genetic traits described as;
  
  • autosomal dominant
  • autosomal recessive
  • sex linked dominant
  • sex linked recessive

Question 1

Genetics

Answer 1

The study of genetics is the study of heredity, the passing of characteristics from parent to offspring

Question 2

Homozygous

Answer 2

Identical alleles on each chromosome

Question 3

Heterozygous

Answer 3

Different alleles on each chromosome

Question 4

Dominant

Answer 4

Genes are likely to be expressed in a person

Question 5

Recessive

Answer 5

Genes require homozygous alleles to be expressed

Question 6

Genotype

Answer 6

Determines genetic makeup of an individual, not apparent or visible

Question 7

Phenotype

Answer 7

Traits that are apparent or visible

Question 8

Multifactorial inheritance

Answer 8

• multiple alleles at different Loci affect the phenotype
• environment influences also play a role
• ex = height - genes, nutrition, and hormones

Question 9

Sex linked disorders

Answer 9

• Carried on the sex chromosomes
• many are linked to the X chromosome and are usually recessive
• females have two copies of the X-chromosome and they are carriers of the disease
• males only have one copy of the X chromosome and are more likely to be affected by the sorter
• ex = hemophilia