Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology Exam 4 > Chapter 15 > Flashcards

Chapter 15 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
0
Q

Loci

A

Position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is the Chromosome Theory of Inheritance

A

Mendelian genes have specific loci (position) on chromosomes

Chromosomes undergo segregation and independent assortment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Wild type

A

Normal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why use fruit flies?

A

Breed at high rates

Generations can be bred every two weeks

Only one pair of chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

XX

A

Female

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

XY

A

Male

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sex-linked gene

A

Gene located on either sex chromosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In humans, sex-linked usually refers to a gene on…

A

The larger X chromosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In order for recessive sex-linked traits to be expressed..
A female needs…
A male needs…

A

A female needs two copies of the allele

A male needs only one copy of the allele

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Sex-linked recessive disorders are common in

A

Males

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a Barr body?

A

What the inactive X condenses into

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Disorders caused by recessive alleles on the X chromosome are..

A

Color blindness
Duchenne muscular dystrophy
Hemophilia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

A female will be a mosaic for a character if…

A

She is heterozygous for a gene located on the X chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are linked genes?

A

Genes located on the same chromosome that tend to be inherited together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is genetic recombination?

A

The production of offspring with combinations of traits differing from either parent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are parental types?

A

Offspring with phenotypes matching one of the parental phenotypes

16
Q

What are recombinant?

A

Offspring with nonparental phenotypes

New combination of traits

17
Q

Crossing over

A

The breaking of the physical connection between genes on the same chromosome

18
Q

Nondisjunction

A

Pair of homologous chromosomes do not separate normally during meiosis

19
Q

Result of nondisjunction

A

One gamete receives 2 of the same type of chromosome

The other receives no copy

20
Q

Aneuploidy results from…?

A

The fertilization of gametes in which nondisjunction occurred

21
Q

Offspring with Aneuploidy…

A

Have abnormal number of a particular chromosome

22
Q

Monosomic Zygote

A

Has only one copy of a particular chromosome

23
Q

Trisomic Zygote

A

Has three copies of a particular chromosomes

24
Q

Polyploidy

A

A condition in which an organism has more than 2 complete sets of chromosome

25
Q

Triploidy

A

3n

Three sets of chromosome

26
Q

Tetraploidy

A

4n

4 sets of chromosomes

27
Q

Alternation of Chromosome structure can happen by way of….

A

Deletion
Duplication
Inversion
Translocation

28
Q

Deletion…

A

Removes a chromosomal segment

ABCDE —–> ABCE

29
Q

Duplication…

A

Repeats a segment

30
Q

Inversion…

A

Reverses a segment within a chromosome

31
Q

Translocation…

A

Moves a segment from one chromosome to another

Biology Exam 4 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions