Cell Type Dichotomous Key

1a cell has a nucleus and organelles → go to # 2
1b cell has no nucleus or organelles → bacterial cell

2a cell has a cell wall → go to # 3
2b cell has no cell wall → animal cell

3a cell has chloroplasts → plant cell
3b cell has no chloroplasts → fungal cell
What type of cell is C?

A) animal
B) bacterial
C) fungal
D) plant

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

25. what does meiosis create? haploids or diploid? somatic cells or gametes?