Life Science Chapter 2: Reproduction and Change

1. What happens when a one-celled organism divides?

• The parent cell ceases to exist.
• The larger offspring cell eats the smaller of offspring cell.
• The offspring remain attached to the parent.
• The parent continues to divide to generate more offspring.

2. What is the function of chromosomes?

• They link together to form the cell membrane.
• They produce energy in a cell.
• They contain all the information that directs & controls a cells activities
• They leave one cell to form a new cell when a cell divides.

3. In which organism is cell division the only step in reproduction?

• a coral
• a sea urchin
• a dog
• an ameba

4. Which explains why the info in a fertilized egg is not exactly like the info in the nucleus of the cells of the parent?

• A process when a fertilized egg divides determines which cell info survives
• A fertilized egg receives all of its chromosomes from the sperm or egg cell
• The fertilized egg has twice the chromosomes that either parent has.
• Half the chromosomes come from each parent

5. Which of these statements is true?

• A gene is part of a chromosome.
• A chromosome is part of a gene.
• Offspring with the same parents have identical genes.
• An offspring's genes are identical to the genes of one of its parents.

6. Offspring of animals get

• half their dominant genes from each parent
• half their recessive genes from each parent
• half their genes from each parent.
• all of the above

7. If an animal with two dominant genes has offspring with an animal with two recessive genes their offspring

• can only have dominant genes.
• can only have recessive genes.
• can only be hybrids.
• can have dominant genes or be hybrids

Tags

CCSS.HSS.CP.A.1

8. Which statement is true about mutations?

• They can affect how well body organs work.
• They can affect an organism's ability to survive.
• They can severely damage the body.
• all statements are true

9. Which of these contributed to Mendel's conclusions from his experiments?

• The study of chromosomes
• The study of genes
• The study of mathematics
• all of the above

10. Mendel's experiments with hybrid pea plants led to which conclusion?

• If an offspring was hybrid for one trait, it was hybrid for all traits.
• If it had dominant genes for one trait, it had dominant genes for all traits
• How one trait is inherited is independent of how another trait is inherited
• The offspring of 2 hybrid pea plants were hybrid for all traits.