Chapter 14 -1 Flashcards Preview

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Flashcards in Chapter 14 -1 Deck (15):
1

Humans have how many homologous pairs?

23 (22 autosomes &1 sex chromosomes

2

What happens in Autosomal Dominance Inheritance?

complete dominance and inherit dominant allele

3

Achondroplasia and Huninghton's disease are examples of?

autosomal dominance inheritance

4

What is autosomal recessive inheritance?

inheritance of 2 recessive alleles

5

Cystic fibrosis and sickle cell disease are examples of?

autosomal recessive inheritance

6

Heterozygotes maintain what in populations?

recessive alleles

7

What are carriers?

they carry the disorders but do not express it

8

Tay sachs is a what?

carrier

9

What is genetic counseling and screening used to determine?

probable offspring

10

Disorders are mostly?

recessive

11

What are examples of recessive disorders?

color blindness, hemophilia, & duchenne muscular dystrophy

12

What is inheritance based on?

changes in chromosome structure

13

What is duplication and what does it cause?

repeating segments/neural & physical problems

14

What is deletion and what does it cause?

removal of segment/ cri-du-chat deletion on chromosome 5

15

What is inversion and what does it cause?

segment revised/ not noticeable, affects fertility