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user100 [1]
3 years ago
9

74 points I will give BRAINLIEST

Biology
2 answers:
Alexeev081 [22]3 years ago
8 0

Answer:

Scientists first discovered chromosomes in the nineteenth century, when they were gazing at cells through light microscopes. But how did they figure out what chromosomes do? And how did they link chromosomes — and the specific genes within them — to the concept of inheritance? After a long period of observational studies through microscopes, several experiments with fruit flies provided the first evidence.

Explanation:

Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes. Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene.

densk [106]3 years ago
8 0

Here's your answer:

Scientists first discovered chromosomes in the nineteenth century, when they were gazing at cells through light microscopes. But how did they figure out what chromosomes do? And how did they link chromosomes — and the specific genes within them — to the concept of inheritance? After a long period of observational studies through microscopes, several experiments with fruit flies provided the first evidence.

Genes are contained in chromosomes, which are in the cell nucleus. A chromosome contains hundreds to thousands of genes. Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene.

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List 3 positive things that humans use algae for:
Svetradugi [14.3K]

Here's a few I got off google

#1: Algae Is Efficient to Create BioFuel.

#2: Algae Can Use Land That Would Otherwise Go to Waste.

#3: Algae Can Be Used for Animal Feed.

#4: Algae Can Function As An Energy Source.

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#6: Algae is a Great Human Food Supplement.

Use which ever ones you want

3 0
3 years ago
What process actually increases the number of genes in an organism's genome?
kupik [55]
MUTATIONS  lead to duplications actually increase the number of genes in a genome.
7 0
3 years ago
Cross bridge formation between myosin heads and actin molecules is caused by the elevation of calcium ion concentration in the c
almond37 [142]

Answer:

sarcoplasmic reticulum deteriorates and ATP production is stopped

Explanation:

Rigor mortis is the third stage of death characterized by stiffening of joints and muscles in body. The stiffening occurs because muscles are not able to return to the relaxed state. There are two reasons for rigor mortis, depletion of ATP and increase in calcium concentration in cytosol. Due to these factors the actin-myosin crossbridge is not able to break and the muscles remain in contracted state.

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3 0
3 years ago
An organisms heart cell stop working properly as a result what would happen to the organism A the organism would develop new cel
emmainna [20.7K]

Answer:

C

Explanation:

The circulatory system would fail, and the entire organism would suffer.

------i took the test and at first i chose what the person above me said which was A, but i got it wrong. when i looked at the "review" to see which ones i got wrong, it showed that the correct answer is C.

4 0
2 years ago
Read 2 more answers
How can natural selection affect a predator-prey relationship in an ecosystem? Choose all answers that are correct.
yanalaym [24]
B and C are correct - A is incorrect as natural selection affects any generation of species. D is also incorrect as any species population change in an ecosystem inevitably affects another, even if it isn't a predator-prey relationship.
8 0
2 years ago
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