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lidiya [134]
3 years ago
13

HELPPP!!!! ME!!!! PLEASE!!!!

Biology
1 answer:
allsm [11]3 years ago
6 0

Answer:

If plants are grown in soil containing worms, then both the plants and worms will benefit from each other because worms break down the organic matter around the dirt, fertilizing the dirt which helps the plants grow.

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A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white co
Rina8888 [55]

The question is incomplete. The complete question is:

Question: A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?

a) Incomplete dominance

b) Genetic recombination

c) Chimerism

d) Codominance

Answer:

d) codominance

Explanation:

Codominance is a pattern of inheritance when none of the alleles of a gene is able to mask the expression of the other allele of the same gene. When the two alleles are present together in a heterozygous genotype, both are expressed and the phenotype of the heterozygote is different from both the pure breeding parents. In the given example, cross-pollination of yellow corn and white corn results in the ears of corn that have an approximately even mix of yellow and white kernels. This means that the heterozygote expresses both the allele for the corn color. Therefore, it represents codominance.

3 0
3 years ago
Which of the following statements about the smooth endoplasmic reticulum is/are correct?
olya-2409 [2.1K]

The correct answers are:

• Liver cells are abundant in SER.  

This is because liver cells contain enzymes that metabolize various lipid-soluble compounds.

• The testes and ovaries are tissue types whose cells are abundant in SER.

This is because testes and ovaries produce steroid hormones (cholesterol is the precursor for their synthesis).

• Cholesterol is made in the SER.  

ER is the organelle at which all membrane lipids are synthesized.

• Phospholipids are synthesized from cytosolic water soluble precursor molecules.  

Phospholipids are the main lipids that are the main structural components of the cell membrane. They are synthesized on the cytosolic side of the ER membrane, from water-soluble cytosolic precursors.

5 0
3 years ago
SOMEONE PLEASE HELP ME!!!!!!
goblinko [34]
8. Arteries carry oxygenated blood from the heart to the rest of the body, while veins carry deoxygenated blood from the body, back to the heart. Arteries are thick and muscular, while veins aren't as thick, and they have valves.
7 0
3 years ago
A bottle of concentrated 20 M ammonia solution needs to be diluted to
storchak [24]

Answer:

The aim of question is to know about molarity of ammonia solution 25% . ... If you have 17 g NH3 in 1000 ml H2O, you have a 1M NH3. ... Can you not titrate it using standardised acid? ... Mass concentration of ammonia in stock solution = ... So 1 M means 35.04gr in a liter of water and because the solution ...

9 answers

·

Top answer:

The ammonia solution (NH3) of 25% means 25 gr NH3 in 100 ml water.

Explanation:

7 0
3 years ago
Will all enzymes break down all substances?
shutvik [7]
Enzymes are specific. So each enzyme breaks down a specific substance. Don't know if this makes sense lol 
3 0
3 years ago
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