Mitosis & Meiosis

Mitosis

1 division 2 daughter cells same/ identical cells 2n somatic cells (body)

Meiosis

2 divisions 4 daughter cells none identical cells "n" gamete (Ovaries & Testees)

Potato farmers in Ireland during the mid 1800's all grew the same type of potato. The potato plants were all produced as clones of one another. When a fungus infected the crop, all of the potatoes were destroyed. This occurred because these potato plants A) Had little genetic variability B) Had increased biodiversity C) Were the product of fertilization D) Were the result of biotechnology

A) Had little genetic variability

One difference between cell division in plant cells and in animal cells is that A) Plants form a cell plate between daughter cells but animals do not B)More cytoplasm forms in animal cells than in plant cells C)Centrioles form in plant cells but not in animal cells D) A double nucleus forms in animal cells but not in plant cells

A) Plants form a cell plate between daughter cells but animals do not

Down syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of A) An error in the process of cloning B) An error in meiotic cell division C) A gene mutation D) Replication of a single chromosome during mitosis

B) An error in meiotic cell division

Which process allows a mammal to continue to grow in size A) Mitosis of sex cells B) Mitosis of body cells C) Meiosis of sex cells D) Meiosis of body cells

B) Mitosis of body cells

Asexual reproduction of diploid organisms normally results in new organisms that contain cells with A)More chromosomes than are found in the cells of the parent B) Two cells with the same number of chromosomes as the parent cell C) Two cells with only one chromosome from each set of homologous chromosomes D)One cell with a replicated set of homologous chromosomes

B) Two cells with the same number of chromosomes as the parent cell

The process of mitotic cell division normally results in the production of A) Four cells with half the number of chromosomes as the parent cell B) Two cells with the same number of chromosomes as the parent cell C) Two cells with only one chromosome from each set of homologous chromosome D) One cell with a replicated set of homologous chromosomes

B) Two cells with the same number of chromosomes as the parent cell

The following events occur during sexual reproduction: A. Mitosis B. Meiosis C. Fertilization D. Birth Which sequence represents the correct order of these events during sexual reproduction. A) A-C-B-D B)B-C-A-D C)C-B-A-D D)B-A-C-D

B)B-C-A-D

Which human disorder is characterized by a group of abnormal body cells that suddenly begin to undergo cell division at a very rapid rate? A)Albinism B)Cancer C)Hemophilia D) Color Blindness

B)Cancer

Asexual reproduction of diploid organisms normally results in new organisms that contain cells with A) More chromosomes than are found in the cells of the parent B) The n number of chromosomes C) The 2n number of chromosomes D) Fewer chromosomes than are found in the cells of the parent

C) The 2n number of chromosomes

Budding is a form of asexual reproduction characterized by A)equal division of cytoplasm and equal division of genetic material B) Unequal division of cytoplasm and unequal division of genetic material C) Unequal division of Cytoplasm and equal division of genetic material D) Equal division of cytoplasm and unequal division of genetic material

C) Unequal division of Cytoplasm and equal division of genetic material

The release of spores by a mushroom is one type of A) Binary fission B) Gametogenesis C) Meiosis D) Asexual reproduction

D) Asexual reproduction

A lizard can escape from a predator by losing its tail when caught. Often, the lizard's tail is replaced by the process of A) Grafting B) Speculation C) Gametogenesis D) Regeneration

D) Regeneration

Which statement correctly describes the genetic makeup of the sperm cells produced by a human male? A) Each cell has pairs of chromosomes and the cells are usually genetically identical B)Each cell has pairs of chromosomes and the cells are usually genetically different C) Each cell has half the normal number of chromosomes and the cells are usually genetically identical D)Each cell has half the normal number of chromosomes and the cells are usually genetically different.

D)Each cell has half the normal number of chromosomes and the cells are usually genetically different.

Binary Fission

equal division of cytoplasm and equal division of genetic material

Budding

unequal division of cytoplasm and equal division of genetic material