Day 33, Chapter 13, pp. 236 -- 238, one bit at a time; skipping variety of sexual life cycles and coming back to it later

 somatic cells (2 minutes), video during mitosis, fantastic

somatic cells  (10)

somatic cells and gametes (4)

karyotype (10 minutes?)

homologous and sister chromosomes (3 minutes)

another homologous and sister (4 minutes)

autosomes (5 minutes)

X and Y chromosomes (3 minutes)

Quiz:

Define:

1.  DNA

2.  gene

3.  chromosome

4.  chromatid

Match words with definition

5.  somatic cell

6.  gamete

7.  karyotype

8.  autosome

9.  homologous chromosomes

10.  sister chromatid

11.  X and Y chromosomes

a.  the number and visual appearance of the chromosomes in the cell nuclei of an organism or species.

b.  Two identical copies of a single replicated chromosome that are connected by a centromere.

c.   Two pieces of DNA within a diploid organism which carry the same genes, one from each parental source. In simpler terms, both of your parents provide a complete genome. Each parent provides the same 23 chromosomes, which encode the same genes.

d.  sex chromosomes

e.  any cell of a living organism other than the reproductive cells.

f.  a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote.

g.  any chromosome that is not a sex chromosome.