Can anyone help with biology

ctenophora and cnidaria are diploblastic animals while chordates and annelids are triploblastic animals....what value is represe

slava [35]

Answer:

it is because of the process during gastrulation ..

7 0

3 years ago

Based on what you've learned, briefly explain the evolutionary significance of the fact that parents pass on their chromosomes t

solmaris [256]

Gene mutations can be classified in two major ways: These mutations are also called germline mutations because they are present in the parent's egg or sperm cells, which are also called germ cells. When an egg and a sperm cell unite, the resulting fertilized egg cell receives DNA from both parents.

The error takes place when the genes are copied and chromosomes are divided. They can lead to genetic disorders that are inherited.

<h3>What is gene mutation?</h3>

The mutation of the gene is the change in one or more genes that can lead to genetic disorders or illness. The gene disorders are classified in the 2 ways as germline mutations which are present in the parent's cells and are called germ cells. That can take place when the egg of the parent cell and the DNA unit.

Find out more information about the chromosomes

at brainly.com/question/25810586

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7 0

2 years ago

A person measures his or her heart rate by counting the number of beats in 30s. If 40±1 beats are counted in 30.0±0.5s, what is

stepan [7]

Answer:

Heart rate=80 beats per minute

Uncertainty=3 beats per minute

Explanation:

We are given that a person measures heart beat by counting the number of beats in 30 s.

If number of beats= $40\pm 1$

Time= $30.0\pm 0.5$

We have to find the heart rate and its uncertainty in beats per minute

Maximum number of beats=40+1=41

Minimum time=30.0-0.5=29.5 s

Because when heart beat increases then time reduces.

We know that 1 minute =60 seconds

Therefore, time = $\frac{29.5}{60}=0.492 minutes$

Average number of beats=40

Average time=30 seconds= $\frac{30}{60}=0.5 minutes$

Heart rate = $\frac{number\;of\;beats}{time}$

Heart rate = $\frac{40}{0.5}=80 beats per minute$

Maximum heart rate= $\frac{41}{0.492}=83.33 beats per minute$

When minimum number of beats=40-1=39

Maximum time=30.0+0.5=30.5 seconds

Because when heart beat slow then it takes more times

Time= $\frac{30.5}{60}=0.508 minutes$

Minimum heart rate= $\frac{39}{0.508}=76.77 beats per minute$

Uncertainty when heart rate is maximum

Uncertainty=83.33-80=3.33 beats per minute

Uncertainty when heart rate is minimum

Uncertainty=80-76.77=3.23 beats per minute

Average uncertainty= $\frac{3.33+3.23}{2}$

Average uncertainty=3.28 $\approx 3$ beats per minute

Hence, heart rate=80 beats per minute

Uncertainty=3 beats per minute

5 0

3 years ago

The appearance of the greatest percentage of white mice occurred ?

steposvetlana [31]

<span>It occurred during the years of longest snow covered.</span>

4 0

3 years ago

Read 2 more answers

Which statements about the modification of chromatin structure in eukaryotes are true?

Aleks04 [339]

This statement - some forms of chromatin modification can be passed on to future generations of cells about the modification of chromatin structure in eukaryotes is true

Eukaryotes are organisms whose cells have membrane-bound organelles in addition to a nucleus. Eukaryotic creatures come in a great variety, including most algae, all animals, plants, fungus, and protists. Eukaryotes can have a single cell or many cells.

Prokaryotes are organisms consisting of cells that don't have cell nuclei or any organelles that are enclosed in membranes. Eukaryotes are organisms composed of cells with membrane-bound organelles and a nucleus that contains genetic material.

Since prokaryotic cells lack a membrane-bound nucleus, eukaryotic cells are the main difference between these two types of creatures. Eukaryotes store their genetic material in their nuclei.

To learn more about eukaryotes please visit -
brainly.com/question/4644590
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4 0

1 year ago