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3 years ago

Which definition correctly describes a haploid cell during meiosis?

2 answers:

6 0

Haploid cell is defined as a cell which contains one complete set of chromosomes.
therefore,
During meiosis haploid cell has one complete set of chromosomes.
hence the right option is D) a cell that has one complete set of chromosomes

Nataly_w [17]3 years ago

5 0

Answer;

D) a cell that has one complete set of chromosomes.

Explanation;

During meiosis cells divide to give four daughter cells that have the number of chromosomes as the parent cell.

The parent cell is a diploid; has two sets of chromosomes, and divides to give haploid daughter cells with a single set of chromosomes.

This type of cell division is used to form gametes (eggs and the sperms).

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someone please help me with Part A and B on biology please i really need help will give brainliest read hard and rotate phone i

finlep [7]

Hi there, I come in behalf of jcherry99,

So, first question -

This shouldn't be that much of an issue, since we have the text to help us out, but I'll try breaking it up into more simpler words:

The placenta is incide the uterus, where the baby starts forming. As you might already know, babies do not eat while they're inside woman's bellies:

So how do they feed?

They feed throught the umbilical cord.

So why is the placenta there? Why would the baby want anything apart from food?

The placenta, instead of trading food with the baby, regulates temperature, supplies it with nutrients, exchanges gas with the mother (which the mother later exchanges with the environment) and gets rid of waste.

And, food is not everything for a baby that is in the urge of developing complex muscles, bones, etc.

Second "question" -

I do not actually know what I'm supposed to do, since there is no question. But I can tell you this - the information contained in part B is correct:

The amnioic sac provides babies with a liquid which allows him to move freely in the uterus, which is very helpful. But, note that he doesn't start moving randomly, he is always in a fetus or similar-to-fetus position.

Hope it helped,

BioTeacher101

6 0

2 years ago

Why can polyploidy individuals lead to speciation fairly quickly?

nekit [7.7K]

Answer:

In species with polyploid, there are more chromosomal sets than in diploid one. Becouse there are more chromosomal structures available, events like mutation, recombination, DNA lose, are more probable to occur.

As the generations pass, the accumulation of these changes tend polyploid to speciation.

8 0

2 years ago

A cell that consists of a 65% salt concentration is placed in a solution with a 27% salt concentration. What will happen to this

zzz [600]

Answer:

The correct answer would be - the cell will get water and expand.

Explanation:

If a cell with a higher salt concentration is placed ins a low salt concentration solution then the water will move through the cell membrane into the cell and the cell will swell or expand.

Water always moves from a low solute concentration to a high concentration area, therefore, if the cell has more salt concentration than outside the cell water move inside the cell which leads to an increase in the water concentration inside the cell and expands its size.

3 0

2 years ago

A test cross can be used to _____.

gtnhenbr [62]

Answer: - Predict an unknown genotype of a purebred dominant plant.

Explanation:

The genetic make up of the organism is called as the genotype. It describes the form of genes or allelic forms present in the organism. A test cross is used to determine the genotype of the organism. In this cross the organism with the unknown genotype is done with that of the organism with the known genotype. It also determines the fact that the organism is either homozygous dominant or hetrozygous.

On the basis of the above description, Predict an unknown genotype of a purebred dominant plant.

8 0

2 years ago

Kira is a hemophiliac. This means that she does not produce clotting factors. What aspect of the clotting process should she be

meriva

A hemopheliac is someone with a bleeding disorder resulting from any missing clotting factors in their blood. Vasoconstriction isn't generally the problem in hemophiliacs, nor is it the destruction of pathogens. If fibrin threads are not present to help form the platelet plug, then excessive bleeding occurs. Fibrin is one clotting factor that a hemophiliac may be missing which is then causing the disorder.

8 0

2 years ago