基因
gene
gamete
game
geneus
homologous chromosome
同源染色体
同源染色单体
姐妹染色单体
姐妹染色体
gamete
配子
精子
卵子
受精卵
haploid
单倍体
二倍体
三倍体
多倍体
fertilization
受精
分裂
发酵
受惊
diploid
单倍体
二倍体
三倍体
多倍体
meiosis
减数分裂
有丝分裂
无丝分裂
二分裂
交叉互换
crossing over
crossing through
gaming over
crossing into
减数分裂
mitosis
meiosis
cytokinesis
cytosis
后期
prophase
metaphase
anaphase
telophase
Meiosis results in cells that are ____.
diploid
haploid
tetraploid
identical to the parent cell
Homologous chromosomes are:
Identical copies of a chromosome
Chromosomes from different species
The chromosomes that make up the pairs
Found only in gametes
Crossing over between homologous chromosomes occurs in ____.
Prophase Ⅰ
Metaphase II
Anaphase II
Telophase II
Homologous chromosomes separate during which phase(s) of meiosis?
interphase
anaphase Ⅰ
telophase Ⅰ
interphase and telophase Ⅰ
DNA replication takes place ______ during meiosis.
once
twice
four times
six times
During which stage of sex cell formation does the number of chromosomes decrease from diploid (2n) to haploid (n)?
Prophase Ⅰ
Anaphase Ⅰ
Prophase II
Anaphase II
The process by which haploid gametes combine is called ____.
interphase
fertilization
genetic variation
synapsis
Sex cells containing half the total number of chromosomes are called?
chromosomes
diploid cells
gametes
phenotypes
What is formed as a result of meiosis?
two genetically identical cells
two genetically different cells
four genetically different cells
four genetically identical cells
How many chromosomes are found in human body cells?
92
46
11
23