Mitosis & meiosis

Réussis tes devoirs et examens dès maintenant avec Quizwiz!

Mitosis is important for?

1. growth 2. replacement of cells and repair damaged tissues 3. asexual reproduction 4. immune system response

According to the table in the video, how many chromosomes are there in each cell at the very end of Meiosis?

23

In a reduction division of a cell with 46 chromosomes, how many chromosomes will the resulting cells contain?

23

how many chromosomes are there in sperm cells and egg cells?

23

Egg cells and sperm cells all come from "starter" cells that originally had __ chromosomes.

46

Humans have how many chromosomes?

46

When the 46 chromosomes replicate in interphase, how many chromatids result?

92

When a sperm cell with 23 chromosomes combines with an egg cell with 23 chromosomes, what is the result?

A fertilized egg with 46 chromosomes

What is pulled apart in anaphase 2?

Chromatids

What is it called when genetic information is exchanged between homologous chromosomes during prophase 1?

Crossing Over

What process completely splits the cytoplasm?

Cytokinesis

Chromosomes are made of?

DNA and protein

What happens during interphase?

DNA replicates, Growth, General Cell processes

Crossing over also happens during prophase 2

False

Meiosis in males produces four identical sperm cells.

False

Nondisjunction can result in...

Genetic Disorders

What kind of chromosomes are approximately the same size and contain the genes for the same traits?

Homologous Chromosomes

which process involves two divisions?

Meiosis

Meiosis

Meiosis is a process that contributes to genetic variety

What is the difference between metaphase 1 and 2?

Metaphase 1 has homologous pairing while in metaphase 2 the chromosomes line up single file.

Mitosis

Mitosis makes identical body cells like your skin cells and stomach cells

In what stage of Meiosis does crossing-over happen?

Prophase I

What pulls the chromosomes apart in anaphase?

Spindle Fibers

According to the video, how is Metaphase I in Meiosis different from Metaphase in Mitosis?

The chromosomes line up next to their homologous pair.

Interphase happens ________ the start of Meiosis.

before

Meiosis doesn't make?

body cells

Crossing-over takes place between.

homologous chromosomes

DNA gets copied or duplicated in...

interphase

What process happens before both mitosis and meiosis?

interphase

Meiosis makes?

sperm cells and egg cells (also known as gametes)


Ensembles d'études connexes

Lesson 5 the story of Joseph Bible

View Set

CH 3 Intro to Search and Seizure

View Set

Psych 122 Chapter 4: Psychological Factors and Health

View Set

Networking Essentials Final Study

View Set

Muslim Innovations and Adaptations

View Set