Meiosis and Sexual Reproduction

Meiosis occurs

• in all sexually reproducing organisms
• In all reproducing organisms
• In all asexually reproducing organisms
• During gametogenesis

Tags

NGSS.HS-LS3-2

Which of following does NOT lead to genetic variation?

• Binary fission
• Independent assortment
• Random fertilization
• Crossing-over

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

In alternation of generations, which of the following is NOT haploid (n)?

• spores
• sporophytes
• gametophytes
• eggs and sperm

During meiosis, two successive divisions

• result in the formation of two identical cells
• cause the formation of a zygote
• are responsible for the formation of four haploid cells
• must occur before mitosis can form gametes

In asexual reproduction

• DNA does not vary much between offspring
• Many offspring are produced in a short time
• Organisms may not be able to adapt to new environments
• All of the above

Tags

NGSS.MS-LS3-2

Fragmentation is a form of

• fission
• crossing over
• asexual reproduction
• sexual reproduction

Tags

NGSS.MS-LS3-2

In humans, each gamete receives

• 23 pairs of chromosomes from each parent
• one chromosome from each of the 23 pairs
• 46 chromosomes
• 23 homologous chromosome pairs

Random distribution of homologous chromosomes during meiosis

• Crossing-over
• Independent Assortment
• Homologous Chromosomes
• Life-Cycle

A cell that contains one set of chromosomes

• Haploid
• Diploid
• Singloid
• Complete

All copies of the single parent�s genes are passed to the offspring

• Genetic Singularity
• Crossing-over
• Independent Assortment
• Asexual Reproduction

Tags

NGSS.HS-LS3-1