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3 years ago

A blastocyst is a A blastocyst is a

Biology

2 answers:

kipiarov [429]3 years ago

8 0

Answer:

hollow ball of cells formed after a fertilized cell undergoes cell division

Explanation:

Blastocyte is the name given to a hollow structure, originating from cell divisions that occur after fertilization. It is an embryo 5 or 6 days old (in some cases 7 days) and composed of approximately 200 cells.

Compared to embryos with fewer days, this embryo has a more differentiated cellular structure, composed of a central cavity (blastocele cavity) and two cell types: the trophoectoderm cells (which later will develop and form the placenta) and the cells of the internal mass (which will form the fetus).

The blastocyst represents the stage of embryonic development prior to implantation in the womb.

Alex_Xolod [135]3 years ago

3 0

It is a hollow ball of cells formed after a fertilized cell undergoes cell division.
I'm a Biology major, hope I helped :)

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trasher [3.6K]

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3 years ago

When --- equals the force of gravity on a falling object, the object reaches terminal velocity.

alukav5142 [94]

Hey Bonny959!

Terminal Velocity is reached when the drag force and buoyancy equal the force of gravity on a falling object!

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3 years ago

What rule is used to join the free nucleotides to the exposed bases of the dna

Rashid [163]

Complementary base-pair rule.

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3 years ago

A man who has male pattern baldness (X^bY) marries a woman who does not carry the allele (X^BX^B). What genotypic ratios would b

JulijaS [17]

Answer:

2 $X^BX^b$ :2 $X^BY$

Explanation:

The genotypic ratio of expected of their offspring would be 2 $X^BX^b$ :2 $X^BY$ .

From the illustration, the genotype of the man with male pattern baldness is $X^bY$ while the genotype of the woman without the baldness allele is $X^BX^B$ .

Crossing the two genotypes in marriage:

$X^bY$ x $X^BX^B$

Progeny: $X^BX^b$ $X^BX^b$ $X^BY$ $X^BY$

Hence, the genotypic ratio of the offspring becomes:

2 $X^BX^b$ :2 $X^BY$

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3 years ago

Why is there identical mountain ranges found across continents?

Ne4ueva [31]

Answer:

World Splitting after dinosaurs died from a meteor strike the planet got split from the crash and when other meteors would hit and mass earthquakes would make on continent become two

Explanation:

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3 years ago