FL Biology EOC - L.16.16 - Meiosis

The process of meiosis includes independent ​ (a)   and ​ (b)   .

• assortment
• crossing over

​ ​ (a)   to create cells with only a ​ (b)   of each chromosome results in the formation of ​ (c)   gametes or spores.

• Reduction division
• single copy
• haploid

The role of meiosis in ​ (a)   includes its contribution to ​ (b)   (through ​ (c)   )

• sexual reproduction
• genetic variation
• segregation and assortment

Tags

NGSS.HS-LS3-2

The process of meiosis, includes independent assortment and crossing over.

Match the processes to their function in genetic variation.

• when the homologous chromosomes are randomly shuffled into daughter cells

• Independent Assortment

• a term used to describe the variation in the DNA sequence in each of our genomes

• Crossing Over

• when parts of chromatids (genes) swap over between homologous chromosomes

• Genetic Variation

Tags

NGSS.HS-LS3-2

How are sexual reproduction and asexual reproduction different from each other?

• sexual reproduction requires two parents and asexual reproduction requires only one parent

• . asexual reproduction requires two parents and sexual reproduction requires only one parent

• mutation rates are lower in sexual reproduction than in asexual reproduction

Answer explanation

During sexual reproduction, genetic information from two organisms is combined. This results in genetic variation in the population.

Tags

NGSS.MS-LS3-2

Which type of reproduction leads to increased genetic variation on a population?

• Parthenogenesis

• asexual reproduction

• Sexual reproduction

• Vegetative reproduction

Tags

NGSS.HS-LS4-2

Which row in the chart indicates the correct process for each event indicated?

• row 1

• row 2

• row 3

• row 4

Answer explanation

The formation of eggs and sperm is a meiotic process resulting in daughter cells that have half of the genetic information of the parent cell. The growth of the embryo is a mitotic process resulting in daughter cells that are identical to the parent cell.

Tags

NGSS.HS-LS1-4

The diagram shows a cellular process that occurs in organisms. 

What is the name of this process?

• meiosis

• mitosis

• endocytosis

• phagocytosis

Tags

NGSS.HS-LS1-4

The diagram shows homologous chromosomes during prophase I of meiosis.

Which of the following correctly describes the process being illustrated? 

• mutation in which the DNA content of the gene is altered

• segregation of sister chromatids

• condensation and segregation of alleles

• crossing-over in which alleles are exchanged

Answer explanation

This process allows each chromosome to have genetic information from both parents, no matter which parent the chromosome originally came from. Crossing-over is responsible for offspring having some qualities of each parent and is also responsible for genetic variation in a population of species.

Tags

NGSS.HS-LS3-2

Which of the following best describes meiosis? 

• It is carried out in all tissues that require cell replacement.

• It occurs only in cells in the reproductive structures of organisms. 

• It happens in all tissues except the brain and spinal cord.

• It is the first stage of mitosis. 

Answer explanation

Meiosis only occurs in the reproductive cells, producing gametes with half of the genetic information as the parent cell

Tags

NGSS.HS-LS3-2