Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/25

Click to flip

25 Cards in this Set

  • Front
  • Back
Meiosis- prophase
nuclear disappears, chromatin condenses and form chromosomes that are visible, and each chromosome consists of 2 chromatids joined at centromere
Meiosis-metaphase
chromosomes line up at the metaphase plate
Meiosis- anaphase
microtubules shorten and/or lengthen and centromeres divide. Shape enlongates and chromosomes are pulled to the opp. side
Meiosis- telaphase
microtubules continue to elongate, nuclei and nuclear envelope forms, chromosomes uncoil into chromatin fiber
Meiosis-Cytokinesis
evidenced by cleavage furrow in animals cells and cell plate in plant cells
heredity
passing of genes from parents to offspring
variation
inherited different with in a species
DNA
nucleic acid polymer with 4 bases
genes
units of heredity made of DNA found on the chromosomes
somatic cell
any cell that is not a sperm or egg....have 46 chromosomes
karyotype
picture of chromosomes to see disorders
homologous chromosomes
have same centromere; position; location and length
how are homologous chromosomes different from one another
have different alleles-genes
autosome
non-sex chromosome
sex chromosome
disimilar chromosomes that determine an indv. sex
diploid
cell contains 2 sets of chromosomes
haploid
cells contain 1 set of chromosomes...only 23
gamete
haploid reproductive cells
fertilization
union of 2 gametes
zygote
diploid cell results from fusion of gametes
meiosis-interphase 1
chromosomes replicate and centriole pairs in animal cells also replicate
meiosis-prophase 1
replication of DNA, 90% of meisois is in prophase 1, chromosomes come together as pairs,
meiosis-metaphase 1
centromeres(tetrads) align at plate
meiosis-anaphase 1
chromosomes are moved to opp sides of cell
meiosis-telaphase 1
cytokinesis occurs and daughter celsl are formed, each pole has a haploid set of chromosomes,