Meiosis and Sexual Life Cycles

What is a genome?

• complete set of an organism's polypeptides
• Complete set of a specie's polypeptides
• a karyotype
• complete set of an organism's genes and DNA sequences

Asexual reproduction occurs during

• meiosis
• mitosis
• fertilization
• chromosome exchange between organisms of different species

Tags

NGSS.MS-LS3-2

If aspen have 19 chromosomes in their haploid gametes, how many chromosomes do they have in their cells that produce the gametes?

• 9
• 10
• 19
• 38

Tags

NGSS.HS-LS3-2

True or false: In sexual reproduction, individuals transmit half of their nuclear genes to each of their offspring. 

• True
• False

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which is true of a species that has a chromosome number of 2n= 16?

• species is diploid with 32 chromosomes per cell
• species has 16 sets of chromosomes per cell
• each diploid cell has 8 homologous pairs
• a gamete from this species has 4 chromosomes

Tags

NGSS.HS-LS3-2

Which is NOT a way that variation is created in sexual reproduction/meiosis?

• crossing over
• independent assortment
• random fertilization
• alternations of generations

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

If an organism has 46 chromosomes in it's karyotype, it must...

• have gametes with 23 chromosomes
• be human
• be an animal
• reproduce sexually

Tags

NGSS.HS-LS3-2

How might a human zygote only have 45 chromosomes?

• an error in either egg or sperm meiotic anaphase
• failure of the egg to be fertilized by the sperm
• failure of the egg to complete meiosis II
• incomplete cytokinesis of the egg

Tags

NGSS.HS-LS3-2

Homologous chromosomes....

• are identical
• carry information for the same traits
• carry the same alleles
• align on the metaphase plate in meiosis II

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If meiosis produces haploid cells, how is the diploid number restored for those organisms that spend most of their life cycle in the diploid state?

• DNA replication
• reverse transcription
• synapsis
• fertilization

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2