Chapter 15 Flashcards Preview

Bio > Chapter 15 > Flashcards

Flashcards in Chapter 15 Deck (19):
1

What were Mendels hereditary factors?

Genes

2

Where were Mendels hereditary factors located?

Chromosomes

3

What happens to homologous chromosomes during meiosis? How does this relate to the law of segregation?

The chromosomes separate and segregate this exactly what the law of segregation

4

Name three reasons to use fruit flies as a model organism for studying genetics

Prolific and fast breeders
Only four pairs of chromosomes
Different varieties

5

What does wild type mean?

The phenotype for a character most commonly observed in natural populations

6

What is the opposite of wild type?

Mutant

7

Morgan's p generation

True bred parents

8

Morgan's f1

Everyone is wild

9

Morgan's f2

3:1 red to white
No white females

10

Why did Morgan get the particular result he got in his f2 generation?

The eye color gene is sex linked it is only present on the X chromosome not the y

11

Long
Female
Only eggs

X chromosome

12

Very short
Male
Sperm and eggs 50/50

Y chromosome

13

Female chromosomes

x and x

14

Male chromosomes

X and y

15

Did Mendel know what his "hereditary factors" actually were?

No

16

Do all animals use this same system of sex chromosomes?

No

17

On which chromosomes are nearly all human sex linked genes found

X

18

Three sex linked disorders found in humans

Duchenne muscular dystrophy
Hemophilia
Color blindness

19

Barr body