Sexual Reproduction & Genetics Test

Mitosis

What are the four phases?

Asexual Reproduction: cell division that forms body cells

Prophase

Metaphase

Anaphase

Telophase

DNA

the molecule that carries genetic instructions for all living organisms and many viruses.

Traits

Characteristics the parents pass down to the offspring

Homozygous

having two identical alleles for a trait

ex: RR, rr

Heterozygous

having two different alleles for a trait.

ex: Rr

Human Reproduction

When a sperm enters an ovum, which leads it turning into a zygote, which results in around a 9 month pregnancy

Flower Reproduction

Reproduce by:

-environment: wind/stream

-Animals pooping seeds

-natural bursting

Gregor Mendel

A pioneer in the study of heredity, an Austrian monk who experimented with pea plants

Pregnancy

When an offspring is developing in a womb

Risks of unhealthy practices during pregnancy

• low birth weight, miscarriage, and long term developmental problems

• Caused by smoking, alcohol, unsafe food

Understand why a gamete has half the number of chromosomes found in body cells

The gamete has half the # of chromosomes so they can pair up with another gamete. So mom gives 23 chromosomes, and dad gives another 23, allowing the offspring the appropriate amount of chromosomes

Goals of parenting in reproduction

Successfully raising offspring to be better in life by teaching and helping them survive until they reach maturity

Explain cancer

The uncontrolled growth and division of cells

• dangerous as it used lots of your body’s energy

• can make your body shut down

How do flowering plants rely on the environment to reproduce successfully?

They rely on the environment to disperse their seeds. This is through wind, water, or animals, (like bees pollinating)

How are mitosis and meiosis different?

Mitosis: creates two identical daughter cells from one parent cell

Meiosis: creates four different daughter cells from one parent cell

What kind of cells are created by meiosis?

gametes: sperm, eggs