Sexual Reproduction and Meiosis

Question 1

Egg

Answer 1

卵子

Eggs are formed(生物的特徴を備えた) in the female(女) reproductive(生殖の) organs.

Question 2

Sperm

Answer 2

精子

Sperm are formed in the male(男) reproductive organs.

Question 3

Fertilization

Answer 3

受精、配偶子合体
    The joining(接合) of an egg and sperm.

Question 4

Zygote

Answer 4

接合子、接合体

The cell that forms(形).

Question 5

Diploid

Answer 5

(染色体が)倍数の

When cells have pairs of similar(似ている) chromosomes,they are said to be diploid.

Question 6

Haploid

Answer 6

(染色体が)半数の

Sex cells do not have pairs of chromosomes,they are said to be haploid.

Question 7

Meiosis

Answer 7

(細胞の)減数分裂
     Meiosis produces(生じる) haploid sex cells.

Question 8

The stages of meiosis and how sex cells produced.

Answer 8

Meiosis have meiosis1 and meiosis2.
Meiosis1.          Meiosis2
Prophase1.       Prophase2
Metaphase1.    Metaphase2
Anaphase1.      Anaphase2
Telophase1.      Telophase2
   Plants with twice the number of chromosomes as the parent plants are often produced.

Question 9

Why meiosis is needed for sexual reproduction.

Answer 9

Meiosis ensures(保証する) that the offspring(子孫) will have the same diploid number as its parent.

Question 10

The cells that are involved(入り組んだ) in fertilization.

Answer 10

Haploid cells include(含む) sperm and egg.The sperm fertilizes the egg to create the zygote cell.

Question 11

How fertilization occurs(生じる) in sexual reproduction.

Answer 11

The sperm fertilizes the egg to create the zygote cell.

Question 12

Sexual reproduction

Answer 12

有性生殖

During sexual reproduction,two sex cells(性細胞),sometimes called an egg(卵子) and sperm(精子),come together.