Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/35

Click to flip

35 Cards in this Set

  • Front
  • Back

Gamete have how many chromosomes?

23 chromosomes

How many gametes are produced after meiosis?

Four

What is a gamete?

A gamete is a sex cell (egg or sperm)

What is a haploid?

A cell with only a single set of unpaired chromosomes (only has 23 chromosomes)

Fertilization occurs where in plants?

Pollen comes from the stamen (the male part of the plant) and gets transferred to the pistl (the female part of the plant

What is pollination?

The transfer of male gametes in pollen from the stamen (male reproductive part of the plant) to the pistl (the female part of the plant)

Watson and crick discovered what in the cell?

They discovered the double helix (in dna)

What is sexual reproduction?

A form of reproduction that requires two parents

How does sexual reproduction differ from asexual reproduction?

Sexual reproduction needs two parents to be able to make offspring but asexual reproduction just needs one parent

How are inherited characteristics determined in humans?

The result of sexual reproduction randomly sorts or shuffles dna

Watson and crick discovered what in the cell?

They discovered the double helix (in dna)

What is sexual reproduction?

A form of reproduction that requires two parents

How does sexual reproduction differ from asexual reproduction?

Sexual reproduction needs two parents to be able to make offspring but asexual reproduction just needs one parent

How are inherited characteristics determined in humans?

The result of sexual reproduction randomly sorts or shuffles dna

What is the outcome of meiosis?

Two daughter cells and two grand daughter cells

Watson and crick discovered what in the cell?

They discovered the double helix (in dna)

What is sexual reproduction?

A form of reproduction that requires two parents

How does sexual reproduction differ from asexual reproduction?

Sexual reproduction needs two parents to be able to make offspring but asexual reproduction just needs one parent

How are inherited characteristics determined in humans?

The result of sexual reproduction randomly sorts or shuffles dna

What is the outcome of meiosis?

A zygote (fetus)

What is sexual reproduction?

A type of reproduction that involves/needs two parents

What do eggs and sperm have in common?

They r both gametes (sex cells)

What is reduction division?

Meiosis 1 (because the chromosomes r going from 46 to 23)

What does a zygote develop into?

A fetus

What happens in the second trimester of pregnancy?

The Baby's organs fully develop and closer to the end u can start to feel the baby move around

Which structures are only found in the male reproductive system?

-penis


-urethra


-scrotum


-testes


-prostate


-seminal vesicles


-vas deferens


-cowpers gland

What structures are only found in the female reproductive system?

-vagina


-cervix


-ovaries


-uterus


-fallopian tubes

What are some advantages of sexual reproduction?

-very little energy is required to find a mate (external)


-greater numbers of offspring can repopulate an area after a disaster (external)


-more protection is given to the embryo and more parental care is given to offspring (internal)


-offspring are genetically different from their parents so they may survive new diseases or other threats that appear in a population

What are some disadvantages of sexual reproduction?

-more energy is generally required to find a mate (internal)


-fewer offspring are produced so if the number of predators increases a population will decline (internal)


Gametes embryos and offspring are unprotected and are often prayed upon (external)


-some beneficial traits may not be passed on from parents to offspring

What are the three stages of sexual reproduction?

1.mating


2.fertilization


3.development

Know the stages of meiosis?

Back (Definition)

What is genetic diversity?

Variation or inherited genetic differences in species

What is external fertilization?

When the egg and sperm meet outside the parents bodies

What is internal fertilization?

When the sperm cells are deposited inside the females body where they meet a egg cell

What happens during the first trimester?

-All the organs systems begin to form


-at four weeks the brain and spinal cord are developing