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Sveta_85 [38]
3 years ago
10

After fertilization, the cells of the zygote divide many times producing a solid ball of cells called a _____.

Biology
2 answers:
lawyer [7]3 years ago
6 0

Answer:

The correct answer will be option D (morula).

Explanation:

After fertilization or fusion of egg and sperm cells, zygote starts first cleavage division after 24 hours and form a solid ball of 10-30 cells called "morula" which can be seen after 96 hours or 4-days.

Morula cells do not show much growth as they are formed inside pellucid zone which cannot expand. This is the final stage formed prior to the formation of a fluid filled blastocoel cavity which further grows to form early blastocyst. The blastomeres on the surface of the morula fom extra-embryonic parts of the embryo while inside the morula develop into the embryo.

Thus, option D (morula) is the correct answer.

Alona [7]3 years ago
4 0
The correct answer is d. morula.
<span>
A morula is a stage in early development, formed 3–4 days after fertilization. It is a 16-cell mass which forms a solid ball contained within the zona pellucida. A morula develops into a blastocyst.</span>
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7 0
1 year ago
However, by comparing the of these organisms, many similarities between them are revealed. These similarities suggest that they'
maw [93]

Complete Question:

1. Organisms don’t all reproduce the same way. However, by comparing the ____ of these organisms, many similarities between them are ____

2. of these organisms, many similarities between them are revealed. These similarities suggest that they’re ___ linked. This type of study is called developmental biology.

Group of answer choices.

A) Cells B) Embryos C) Mode of reproduction D) Evolutionarily. E). Revealed.

Answer:

embryo; revealed; evolutionarily.

Explanation:

Reproduction can be defined as a biological process which typically involves living organisms producing an offspring.

Basically, there are two (2) methods of reproduction and these are;

I. Asexual reproduction: it involves the cloning of a living organism to produce an offspring because there is only a single parent.

II. Sexual reproduction: it involves the combination of the genome (gamete) of a male and female living organism during fertilization.

It's a fact that all living organisms do not reproduce the same way.

However, by comparing the embryo of these organisms, many similarities between them are revealed. These similarities suggest that they’re evolutionarily linked.

Hence, we refer to this type of study as developmental biology

4 0
3 years ago
A scientist discovered a new antibiotic and wanted to know if it would be effective against group A Streptococcus bacteria. He d
stepladder [879]
An experiment is a process where the a scientist tests and draws their evidence and data from. Hence, this process is where the hypothesis be supported or negated.

Variables are traits, factors, or characteristics that either manipulated or measured being the subject to become the data.
The independent variable is B. 
<span>the presence of the new antibiotic</span>
4 0
2 years ago
Read 2 more answers
If there is 10% adenine in a DNA molecule what percentage of thymine is in the DNA molecule?
vampirchik [111]
<span>Thymine Is 20% in the DNA molecule.

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4 0
3 years ago
Avery and DNA (page 289)
Ivan

Yes, Avery, Mc Leod and Mc Carty do thought that genes may be involved in the transformation of non virulent rough Strains of <em>Diplococcus pneumoniae</em> to harmful smooth strained bacteria

<h3><u>Explanation:</u></h3>

Avery was a Canadian medical researcher who along with other two well known scientists of the contemporary time went for an experiment where he took two strains of bacteria Diplococcus pneumoniae - one is rough and nonvirulent and another is smooth and virulent. For a control run, he injected both the bacteria in separate mice and the expected result was there. Now as he injected heat killed smooth bacteria, the mice survived. But as he injected heat killed smooth bacteria with rough bacteria, although there was no organism which can kill the mice the mice died. And autopsy revealed the presence of live smooth bacteria in the lungs.

Thus they suspected something have gone from the dead smooth bacteria into the non virulent rough bacteria which lead to transformation of the rough bacteria to smooth ones. Thus, the experiment was carried on, which suspected role of genes in this transformation.

5 0
3 years ago
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