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

Homologous chromosomes....

carry information for the same traits

align on the metaphase plate in meiosis II

The human X and Y chromosomes...

include genes that determine an individual's sex

are both present in every somatic cell of males and females

are the same size and have the same number of genes

organized image of a cell's chromosomes

a display of all the cell types in an organism

a display of the cell's mitotic stages

After telophase I of meiosis, the chromosomal makeup of each daughter cell is....

haploid with chromosomes composed of two chromatids

diploid with chromsomes composed of a single chromatid

diploid with chromosomes composed of two chromatids

haploid with chromosomes composed of single chromatid

Cells at the completion of meiosis have...

half the number of chromosomes and 1/4 the amount of DNA

half the number of chromosomes and half the amount of DNA

the same number of chromosomes and half the amount of DNA

half the amount of cytoplasm and twice the amount of DNA

Which of the following happens at the conclusion of meiosis I?

Homologous chromosomes of a pair are separated from each other

The chromosome number per cell remains the same

Sister chromatids are separated

Which of the following occurs in meiosis but not in mitosis?

alignment of chromosomes at equator

When homologous chromosomes cross over, what occurs?

segments of DNA from non-sister chromatids are exchanged

two chromatids get tangled, resulting in one resequencing its DNA

two sister chromatids exchange identical pieces of DNA

maternal alleles are "corrected" to be like paternal alleles

An ant has a diploid number of 2 chromosomes. Following meiosis, each daughter cell will have 1 chromosomes. Diversity in the species may be generated by mutations and ____________.

crossing over and independent assortment

Meiosis and Sexual Life Cycles

Biology

9th - 12th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Asexual reproduction occurs during

meiosis

mitosis

fertilization

chromosome exchange between organisms of different species

Tags

NGSS.MS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Tags

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

True

False

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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Meiosis and Sexual Life Cycles

What is a genome?

Asexual reproduction occurs during

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

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

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

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

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

How might a human zygote only have 45 chromosomes?

Homologous chromosomes....

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?

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