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Ksenya-84 [330]
2 years ago
12

Using the illustration above, why are the chromosomes in two of the sex cells different from the chromosomes in the parent cell?

Biology
1 answer:
Misha Larkins [42]2 years ago
8 0

Answer: A  the chromosomes from another parent cell were introduced

Explanation: A child is created when the male sex cell joins the female cell. If the male and female sex cells had the standard number of chromosomes, as is found in body cells then the zygote (baby) would have double that number of chromosomes. The number of chromosomes would keep doubling every generation. To avoid this doubling the parent's body cells split by miosis which halves the number of chromosomes and so when the sex cells join the total number of chromosomes is the same as that found in the parent's body cells.

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Oksana_A [137]

Answer:   Основна функція сну — це відновлення фізичних та психічних сил, яке дозволяє максимально адаптуватися до зміни умов зовнішнього і внутрішнього середовищ. Сон становить собою чергування різних функціональних станів головного мозку, а не є «відпочинком» для головного мозку, як вважали раніше.

5 0
3 years ago
Which of the following correctly describes the disruption of an ecosystem service by an anthropogenic activity?
ehidna [41]

Answer:

The correct answer is "Provisioning services are disrupted by increased combustion of fossil fuels, which leads to an increase in air pollution".

Explanation:

The ecosystem provides several services that if used with responsibility, could be sustained by the nature. Unfortunately, disruption of an ecosystem service could happen by an anthropogenic activity, which are the activities that humans perform. One example is the disruption of provisioning services by increased combustion of fossil fuels, which leads to an increase in air pollution. The ecosystem provides clean air that gives oxygen for people and animals to breath, however high combustion of fossil fuels could disrupt this service.

8 0
3 years ago
Which of the following are example(s) of causes of mass extinctions in Earth's history?
Lilit [14]
The answer is C. ice ages

4 0
3 years ago
Read 2 more answers
Fill in the chart each creature
Lady bird [3.3K]

Theres no chart in your question.

5 0
3 years ago
A _____ is a section of a chromosome that codes for a trait. The specific combination of alleles an organism has is called its _
ANTONII [103]

Answer:

Allele. An allele is a viable DNA (deoxyribonucleic acid) coding that occupies a given locus (position) on a chromosome. ... An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene.

3 0
3 years ago
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