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Flashcards in Quiz 5 Deck (33)
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1

What is asexual reproduction?

identical cloning from one parent

2

What is sexual reproduction?

reproduction that requires two different organisms and has variation

3

What is the most common type of reproduction?

asexual

4

What is the paradox of sex?

shows that asexual reproduction does not have variation in gender or at all

5

What is the changing environment hypothesis?

if the environment changes from one generation to another, the change can make parent less able to adapt

6

What ddi Greg Mendel contribute?

he determined how traits are transmitted from parents to offspring

7

What were the two hypotheses?

blending inheritance and inheritance of acquired characteristics

8

What is the theory of bleeding inheritance?

heredity determinants blend

9

What is the theory of inheritance of acquired characteristics?

characteristics that the parent works for is passed on to the offspring

10

What was used to test these hypothesis?

garden peas because they were easy to manipulate and reproduce

11

What were the two major take aways from testing the garden peas?

dominant and recessive traits exist

12

What is particulate inheritance?

hereditary determinants act as distinct entities and do not blend

13

What is a gene?

a hereditary determinant

14

What is an allele?

a version of a gene

15

What is a genotype?

the genetic makeup

16

What is a phenotype?

physical makeup

17

What is the principle of segregation?

each gamete contains one allele of each trait

18

What is a homozygous allele?

it has two copes of the same allele (AA or aa)

19

What is a heterozygous allele?

two different alleles (Aa)

20

What is the table of possible crosses called?

a punnett square

21

What are the two parts of the principle of independent assortment?

1. alleles assort independently into gametes
2. alleles for various traits also assort independently

22

What are hereditary determinants?

chromosomes

23

What is an X linked trait?

A trait that only effects a certain gender (men)

24

What is a wild type?

the most common phenotype

25

What is a mutant type?

a different form of wild type

26

What is gene linkage?

the physical association of genes on a chromosome

27

What is linkage mapping?

examines frequency of crossing over

28

What is the frequency of recombination?

cM (centimorgan)

29

What are the two main exceptions of mender's rules?

1. sex linkage
2. gene linkage

30

What is a polymorphic trait?

when two or more clearly different phenotypes exist in the same population of a species