BIOLOGY HIGH SCHOOL

Which of the following happens to chromosomes during prophase?A
They move to opposite sides of the cell.
B
They become centrioles.
They condense.
D
They disappear.

Answers

Answer 1
Answer:

Chromosomes condense during prophase

Related Questions

please help me If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio of tall:short plants? 1:1 1:2 3:1 all tall all short
A Richter Scale reading of 7 is how many times greater that a reading of 6?2x5x10x100x
Which of the following causes a precipitate to form
Why is it important for scientists to develop a way to grow tissues that have a built-in system to supply blood
A woman is blood type A. Her husband is blood type AB. Which of the following would be possible blood types of their children.​

Define universal solvent.

Answers

Universal Solvent- is a substance that can dissolve in water 

For questions 1-5 decide whether the example is a producer, consumer or decomposer. A rabbit is an example of a _________. Question 1 options: A.Producer B.Consumer C.Decomposer

Answers

a rabbit is a consumer
a consumer eats plants or other animals. Such as: lion, bear, horse, human, etc. Organisms that eat autotrophs; these organisms are called herbivores or primary consumers -- an example is a rabbit that eats grass. The next link in the chain eats herbivores - these are called secondary consumers  -- an example is a snake that eats rabbits. 

What is the end result of meiosis? a. Two diploid cells
b. Two haploid cells
c. Four diploid cells
d. Four haploid cells

Answers

D is the correct answer. Haploid cells only have one set of chromosomes. Meiosis results in duplication of cells with only one set of chromosomes in each - first chromosomes are copied, then DNA gets swapped, then the cells divide with one chromosome set in each of the four cells.

A chemical substance required by the body is called

Answers

This question is rather vague however, there are numerous chemical substances that the body needs one could be neurotransmitters that are used by neurons to transmit information to other nearby neurons.

The neuron, a cell that composes the nervous system. For example a brain, an organ composed of thousands of neural fibers and glial cells that performs many important organismic functions. 

Other substance:
Hormones

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Answers

The answer is 0 percent.

Let's represent alleles and genotypes:
R - dominant allele for round seeds,
r - recessive allele for wrinkled seeds,
Y - dominant allele for yellow seeds,
y - recessive allele for green seeds.

RR - dominant homozygote with round seeds,
rr - recessive homozygote with wrinkled seeds,
Rr- heterozygote with round seeds,
YY - dominant homozygote with yellow seeds,
yy - recessive homozygote with green seeds,
Yy * heterozygote with yellow seeds.

So, in order to have wrinkled seeds, the offspring's genotype must contain rr, and to have green seeds, the offspring's genotype must contain either YY or Yy.
According to the image, all of the offspring will have round, yellow seeds (RRYY, RRYy, RrYY, RrYy).

If RRYY and RrYy is crossed the probability of the offspring having wrinkled and yellow seed is none (zero).

Further Explanation:

Dominant character is the trait that masks the effect of the other character and is phenotypically shown. Whereas, the characters which is been masked is referred to be as recessive character.

In the given case,

• R- Denotes the dominant round seed character.

• r- Represents wrinkled recessive character.

• Y- Shows the dominant character of yellow colored seeds.

• y- Is used to represent the green color recessive trait.

Mentioned below are the possible homo and hetrozygotes of the trait;

 YY – Dominant homozygote which represents the yellow seeds.

 yy – Recessive homozygote representing green color seed.

 Yy – Dominant hetrozygote that represents yellow seeds.  

 RR – Dominant homozygote representing round seeds.

 Rr – Dominant hetrozygote representing round seeds.

 rr – Recessive homozygote representing wrinkled seeds.

In the given instance for the offspring to have wrinkled and yellow seed it should have the genotype of rrYy or rrYY.  

If the cross of RRYY and RrYy is done as shown in the punnett square; the required condition is not possible.

Learn more:

1. Learn more about meiosis brainly.com/question/1600165

2. Learn more about the process of molecular diffusion in a cell brainly.com/question/1600165

3. Learn more about human sperm and egg cell brainly.com/question/1626319

Answer Details:

Grade: High School

Subject: Biology

Chapter: Genetics- Mendalian Inheritance

Keywords:

RRYY, RrYy, round seeds, wrinkled seeds, yellow seeds, green seeds, Mendel, heterozygotes, homozygotes, dominant, recessive.

5. How does water reach the leaves from the root? A) Stomata B) Xylem C) Phloem D) All of the above

Answers

Answer:

B.Xylem

Explanation:

Xylem transports water in plants. Water is absorbed from the soil through root hair cells. Water moves by osmosis from one root cell to another until it reaches the xylem. It is transported through the xylem vessels up the stem to the leaves. It evaporates from the leaves (transpiration).
Other Questions
Identify the correct order in which breast cancer develops. A) mutiation of normal cells-tumor growth-invasions of tissues-metastasis-metastatic tumor . B) invasion of tissues-metastasis-mutation of normal cells-tumor growth-mestastatic tumor. C) metastasis-mutation of normal cells-invasion of tumor-mestastatic tumor-tumor growth.
Keystone SpeciesA keystone species is one whose presence contributes to the diversity of life and whoseextinction would lead to the extinction of other forms of life. A keystone species helps tosupport the ecosystem of which it is a part.An example of what can happen when a keystone species is removed occurred when furhunters eliminated sea otters from some Pacific Ocean kelp beds. Otters eat sea urchins,which eat kelp. With its major predator gone, sea urchin populations exploded andconsumed most of the kelp. Fish, snails, and other animals associated with the kelp bedsdisappeared.The grizzly bear is another example of a keystone species. Grizzlies transfer nutrientsfrom the ocean ecosystem to the forest ecosystem. The first stage of this transfer isperformed by salmon that swim up rivers, sometimes for hundreds of miles. Salmon are richin nitrogen, sulfur, carbon, and phosphorus. The bears capture the salmon and carry themonto dry land, scattering nutrient-rich feces (wastes) and partially eaten salmon carcasses.It has been estimated that the bears leave up to half of the salmon they harvest on theforest floor.One action humans can take that might ensure that these sea otters will continue their function asa keystone species in their environment is to(1) establish a sea otter wildlife refuge in the Atlantic Ocean(2) pass laws to regulate the hunting of sea otters(3) plant kelp in the Pacific Ocean(4) destroy sea urchins found living in the kelp beds
Ocean water is sometimes referred to as saline water as it contains significant concentrations of dissolved salts. Please select the best answer from the choices provided T F
A(n) __________ is created when sperm meets egg and contains all DNA necessary to create a person.a. zygoteb. blastocystc. embryod. fetus