Reproduction, mitosis, and meiosis

Which best explains why sexual reproduction produces greater variations in the offspring? 

• The DNA comes from two genetically different parents

• The DNA comes from one parent that is genetically identical.

• The sex cells are produced by mitosis

• The sex cells are produced by budding.

How does mitosis compare to meiosis? 

• Mitosis produces sex cells with half the genetic information, while meiosis produces two identical daughter cells

• Mitosis only occurs in single-celled organisms, while meiosis only occurs in animals

• Mitosis produces two identical daughter cells, while meiosis produces sex cells with half the genetic information

• Mitosis only occurs in animals, while meiosis only occurs in single-celled organisms

Which diagram most correctly represents the process of mitosis? 

• 1

• 2

• 3

• 4

A scientist noticed that all of the offspring of the yeast fungus are identical to the parent. However, the offspring of a cat all look different. What most likely caused this to occur? 

• Both yeast and the cat produced offspring through sexual reproduction

• Both yeast and the cat produced offspring through asexual reproduction

• Yeast produced offspring through sexual reproduction, while the cat produced offspring through asexual reproduction

• Yeast produced offspring through asexual reproduction, while the cat produced offspring through sexual reproduction.

By what process are two daughter nuclei formed that are identical to each other and to the original nucleus? 

• meiosis

• fertilization

• mitosis

• sexual reproduction

Chromosomes normally occur as homologous pairs in

• A sperm cell

• An egg cell

• A zygote

• A gamete

A kitten has been born with six toes on one foot. Which of the following best explains this? 

• The parent of the kitten had only four toes

• The kitten is the product of a cross-breeding

• The six toes are the product of a mutation that occurred

• Five cells were produced in the process of meiosis as opposed to the normal number of cells, which is four

In a genetics investigation, students used two red straws to represent male parent DNA. They used two green straws to represent female parent DNA. The offspring in this activity are best represented by: 

• either one red OR one green straw

• two green straws

• two red straws

• one red straw AND one green straw

Which of the following is a true statement about reproduction? 

• Sexual reproduction requires two individuals from the same species; two males, two females, or a male and a female

• Asexual reproduction requires two individuals from the same species: two males, two females, or a male and a female

• Sexual reproduction requires male and female gametes

• Asexual reproduction requires a male and a female from the same species

Sexual reproduction involves the joining of cells called

• gametes

• zygotes

• alleles

• chromosomes