Genetic Variation and Meiosis

The offspring of asexually reproducing organisms have genes that are _________ to that of their parent.

• diifferent

• identical

Answer explanation

The offspring of asexually reproducing organisms inherit their genes directly from their parent, resulting in genetically identical offspring. Therefore, the correct answer is 'identical'.

Tags

NGSS.MS-LS3-2

The offspring of sexually reproducing organisms have genes that are ________ from that of their parents.

• different

• identical

Answer explanation

The offspring of sexually reproducing organisms inherit a combination of genes from both parents, resulting in genetic variation. Therefore, their genes are different from those of their parents.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

In sexually reproducing organisms, each parent contributes ___________ of the genes acquired by the offspring.

• all

• half

• none

Answer explanation

In sexually reproducing organisms, each parent contributes half of the genes to the offspring. This means that the genetic material is equally inherited from both the mother and the father.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Process used to make more of its own kind, but with only one parent

• sexual reproduction

• asexual reproduction

• development

• growth

Answer explanation

Asexual reproduction is the process of making more of its own kind with only one parent, unlike sexual reproduction which requires two parents. This makes asexual reproduction the correct choice for the question.

Tags

NGSS.MS-LS3-2

Joining of an egg cell and sperm cell from two different organisms

• sexual reproduction

• asexual reproduction

• growth

• development

Answer explanation

The joining of an egg cell and sperm cell from two different organisms is known as sexual reproduction. This process involves the combination of genetic material from two parents, leading to offspring with genetic diversity.

The process of meiosis creates

• gametes

• eggs or sperm

• genetic variation

• all of these

Answer explanation

Meiosis produces gametes, which are eggs or sperm, and it also introduces genetic variation through processes like crossing over. Therefore, the correct answer is 'all of these'.

Tags

NGSS.HS-LS3-2

A fruit fly has 8 chromosomes in its somatic (body) cells. The fruit fly's gametes would contain how many chromosomes?

• 23

• 46

• 8

• 4

Answer explanation

A fruit fly has 8 chromosomes in its somatic cells, which are diploid (2n). Gametes are haploid (n), so they contain half the number of chromosomes. Therefore, the fruit fly's gametes would have 4 chromosomes.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

During meiosis the human egg or sperm cells are formed and during fertilization, the egg and sperm cell are joined. How many chromosomes are found in a human zygote?

• 23

• 46

• 8

• 4

Answer explanation

A human zygote is formed when an egg (23 chromosomes) and a sperm (23 chromosomes) unite, resulting in a total of 46 chromosomes. Therefore, the correct answer is 46.

The offspring of asexually reproducing organisms have genes that are ____________ to that of their parent.

• different

• same

• dominant

• recessive

Answer explanation

The offspring of asexually reproducing organisms inherit genes that are the same as their parent, resulting in genetically identical individuals. This is why the correct answer is 'same'.

Tags

NGSS.HS-LS3-1

The offspring of sexually reproducing organisms have genes that are _____________ from that of their parents.

• different

• same

• dominant

• recessive

Answer explanation

The offspring of sexually reproducing organisms inherit a combination of genes from both parents, resulting in genetic variation. Therefore, their genes are different from those of their parents.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1