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Sindrei [870]
3 years ago
11

Why do gametes contain half the number of chromosomes as body cells?

Biology
1 answer:
Marat540 [252]3 years ago
4 0

Answer:

Explanation:

This is because meoisis division occurs in gamates which are sperm cell and egg cell . And in meoisis division the number of chromosomes for the daughter cells is half the number of chromosomes that the parent cell have. This is because when there is a fussion of male and female sex cells ,the zygote which is the daughter cell should have the 46 chromosomes which is the normal chromosomes for humans and when this chromosomes are in pairs then they should be in 23 pairs of chromosomes which are haploid and later be used for another cycle when the person matures and ready to reproduce

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hoa [83]
The answer is option A)cyclins
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How does sexual reproduction result in unique offspring​
UkoKoshka [18]

Answer:

Sexual reproduction involves two parents and produces offspring that are genetically unique. During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.

I hope it's helpful!

7 0
3 years ago
Which life cycle describes a plant that reproduces asexually and sexually?
Artemon [7]
I think it's D because I suppose that 'all its chromosomes' equals diploid
5 0
3 years ago
Read 2 more answers
1. What are the independent and dependent variables in each of the experiments?
Dafna1 [17]
  • The independent variables are temperature, airflow, and light and the dependent variable in each of the experiments is evaporation.
  • The schematic representation in the diagram helps in the understanding of the setup for the experiments.
  • The level of temperature, the rate of airflow, and the intensity of light must be controlled in the experiments.
  • A person will not be confident in experiment 3 results as the temperature is the independent variable that alters the results of evaporation.

<h3>What are the four foremost factors of a managed test?</h3>

When possible, scientists take a look at their hypotheses through the use of managed experiments. A managed test is a systematic take look at executed below-managed conditions, which means that simply one (or a few) elements are modified at a time, even as all others are saved consistently. We'll appear carefully at managed experiments within side the subsequent section.

  • In the three experiments, the dependent variable is evaporation, as it changes with the change in another variable.

The independent variable in experiment 1 is temperature, experiment 2 is airflow, and experiment 3 is light.

  • The experiment can be understood better with the representation of the schematic that shows the setup to analyze how the experiment was performed. Therefore the diagram must add the schematic of the experiment.

  • The controlled items in the experiment are the variables that are set at the particular unit to form the result. the controlled item in experiment 1 is temperature, experiment 2 is airflow from the fan, and experiment 3 is the intensity of light.

  • The result of experiment 3 is based on the dependence on the intensity of light keeping temperature constant and controlled. If the temperature is not controlled in the experiment then it may lead to an alteration in the results as it depends on both light and temperature.

  • The flow chart for the increase in pressure affecting the evaporation is given in the image attached.

Read more about variables :

brainly.com/question/2804470

#SPJ1

6 0
2 years ago
Online Transpiration Lab Activity Go to http://www.phschool/science/biology_place/labbench/lab9/intro.html Read through all sect
andrew-mc [135]

Answer:

1) pathway taken by water

water is absorbed from the soil, through the root hair cells and is transported by the xylem vessel up the stem to the leaf and/or flowers. From the leaf, some water is lost to the atmosphere as vapors escape out through the stoma present in the lower epidermal layer of the leaves.

2) water potential gradient

water potential refers to the concentration of water present. A gradient forms when there is a difference between the concentrations of water in two regions separated by a partially permeable membrane.

Hence, water moving down a water potential gradient means that it goes from a region of high water potential to a region of low water potential.

3) There are tiny openings on the lower side of the leaves called as stomata (plural: stoma) that allow for gaseous exchange to occur. These openings are controlled by guard cells which are open during the day and close during the night.

Hope that answers the question, have a great day!

8 0
3 years ago
Read 2 more answers
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