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andreyandreev [35.5K]
3 years ago
7

In the F2 generation of Mendel’s crosses, options all plants had the dominant trait. half of the plants had the dominant allele.

all plants had both the dominant and recessive alleles. one in four plants had two alleles for the recessive trait.
Biology
1 answer:
Artemon [7]3 years ago
8 0

Answer:

one in four plants had two alleles for the recessive trait

Explanation:

Hope it helps.

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How is cytokinesis different in animals and plants? Animal cells get pinched into two daughter cells by the cell membrane; the p
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<h2><em>Let's review what cytokinesis is first.</em></h2>

<em>Cytokensis</em> is the <em>physical process of cell division</em>. It divides the cytoplasm of a parental cell into two different daughter cells.

In plants, a cell wall forms. Cytokensis occurs in mitosis and meiosis. The objective for cytokensis is to divide the parent cell into two daughter cells. So cytokensis in plants is when a cell wall forms in between the daughter cells. Plant cells have walls, so they CANNOT divide using a cleavage furrow. A cell plate forms across the cell during telophase.

In animal cells, cleavage furrow forms. This pinches the cell in half and forms two different cells.  

<em>A cleavage furrow is an indentation that appears in the cells surface when the cell is preparing to divide.</em>

So, let's review our options:

A: Animal cells get pinched into two daughter cells by the cell membrane; the plant cell has to form a cell plate before it can create daughter cells.

This would be the <em>correct answer.</em><em> </em>The only main difference between animal cell cytokensis vs plant cell cytokensis is the cell wall that animal cells lack. Animal cells get pinched into two daughter cells, by the cleavage furrow in the cell membrane, while the plant cell has to form a cell plate before it can create daughter cells.

B: Animal cells give daughter cells a full set of chromosomes at the time of division; plant cells give daughter cells a half set of chromosomes. .

This can be disproven. In meosis, a cell divides into four cells that have half the number of chromosomes. In mitosis, all chromosomes are kept. Both Plant & Animal cells both reproduce using both both meosis and mitosis, so this option is <em>irrelevant. </em>

C: Animal cells require an extra grow phase before cytokensis; plant cells move straight to cytokensis.

Both animal cells and plant cells have the same amount of "grow phases" before cytokensis. This option is<em> irrelevant. </em>

D: Animal cells begin cytokensis during anaphase, plant cells begin around the same time as telophase.

They both begin during the same time. This option is also<em> irrelevant.</em>

8 0
3 years ago
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Someone please help I don't understand ​
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Answer:

The chemicals left over after a chemical reaction are substrates or resultants.

yellow represents carbon so there are 6 carbon atoms.

blue represents hydrogen/water atoms so

Red represents the oxygen atoms bonded to the hydrogen atoms.

4 0
3 years ago
If a mother carries a recessive allele for a genetic disorder, such as cystic fibrosis, under what circumstances will her childr
Stels [109]

Answer: B) The mother's father must also carry the recessive allele

Explanation:

How Are Men Affected by Cystic Fibrosis? Males account for slightly more than 50 percent of all cases of cystic fibrosis (CF) but generally have better outcomes than females until about age 20.

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Two sounds are described below:
kolezko [41]

Answer:

B

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Also, this isn't a biology question. Have a good day.

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