Question

Can somebody please help with a portfolio??? Ill give a medal and become a fan!!!

Answer 1

what is your question?

Answer 2

do you go to connections? theres a biology portfolio about meiosis and i need some help with it

Answer 3

May be I can help you ^^

Answer 4

Problem
How does meiosis increase genetic variation?

Introduction
Most cells in organisms that reproduce sexually are diploid. They have two sets of
chromosomes and two complete sets of genes. Gametes are an exception. Gametes
are the cells that combine during sexual reproduction. In animals, these cells are
called sperm and eggs. Gametes are haploid cells with only one set of chromosomes.
Meiosis is the process in which haploid cells form from diploid cells.
In this lab, you will model the steps in meiosis. You will make drawings of your
models. You will also identify points in the process that can lead to greater genetic
variation.

Skills Focus
Use Models, Sequence, Draw Conclusions

Materials
• pop beads
• magnetic centromeres
• large sheet of paper
• colored pencils
• scissors


Safety
Do not direct the points of the scissors toward yourself or others. Use the scissors
only as instructed.


Pre-Lab Questions
1. Control Variables Why must you use the same number of beads when you
construct the second chromosome in Step 1?

Answer 5

http://www.sciencelearn.org.nz/Contexts/Uniquely-Me/Science-Ideas-and-Concepts/Meiosis-inheritance-and-variation