meiosis

Question 1

gene

Answer 1

a set of instructions in dna for a specific trait or characteristic

Question 2

allele

Answer 2

a variation of a gene

Question 3

phenotype

Answer 3

the physical appearance of a trait or characteristic

Question 4

genotype

Answer 4

genetic makeup of a individual that produces the trait

Question 5

dominant

Answer 5

phenotype seen when genotype is heterozygous

Question 6

recessive

Answer 6

trait that is “masked” when genotype is heterozygous

Question 7

homozygous

Answer 7

have two alleles for a trait that are the same

Question 8

heterozygous

Answer 8

have two alleles for a trait that are different

Question 9

haploid

Answer 9

1 chromosome from each pair of homologous chromosomes

Question 10

diploid

Answer 10

having 2 sets of chromosomes

Question 11

fertilization

Answer 11

the fusion of the nuclei of the male and female gametes

Question 12

zygote

Answer 12

the diploid cell resulting from fusion of 2 gametes

Question 13

synapsis

Answer 13

the pairing of replicated homologous chromosomes during prophase 1 of meiosis

Question 14

tetrad

Answer 14

the group of 4 chromosomes formed in prophase 1 of meiosis

Question 15

crossing over

Answer 15

pieces of homologous chromosomes are exchanged during synapsis

Question 16

oogenesis

Answer 16

the formation of eggs in the ovaries

Question 17

spermatogenesis

Answer 17

the formation of sperm in the testes

Question 18

gonads

Answer 18

ovaries and tested

Question 19

monoploid gametes are produced in plants and animals as a result of

Answer 19

meiosis

Question 20

sexual reproducing species show greater variation that asexually reproducing species due to

Answer 20

the recombination of chromosomes

Question 21

in animals, polar bodies are formed as a result of

Answer 21

meiotic cell division in females

Question 22

during normal meiotic cell division of a diploid cell, the change in the chromosome number that occurs is represented by

Answer 22

2n -> n

Question 23

the diploid number is 20 what is the number of chromosomes found in each normal egg produced

Answer 23

10

Question 24

a human zygote produced during fertilization is formed from 2 gametes that are identical in

Answer 24

chromosome number

Question 25

the pairing of homologous chromosomes during prophase of the first meiotic division is called

Answer 25

synapsis

Question 26

what are true ab mitosis and meiosis

Answer 26

dna replication occurs before the division of the nucleus

Question 27

the desperation of a pair of homologous chromosomes during meiotic cell division is called

Answer 27

crossing over

Question 28

compared to human cells resulting from notification cell division, human cella’s resulting from meiotic cell division would have

Answer 28

one half the number of chromosomes

Question 29

during meiosis, crossing over may occur and result in

Answer 29

variation within the species

Question 30

what best describes chromosomes that have the same size, centromere location and genes for the same characteristics

Answer 30

they are homologous

Question 31

where does meiosis occur

Answer 31

gonads

Question 32

how many chromosomes relative to parental cell

Answer 32

mitosis: same number
meiosis: half