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EastWind [94]
2 years ago
8

What fossils would be bad index fossils

Biology
1 answer:
gizmo_the_mogwai [7]2 years ago
7 0
Birds for example would have a bad index fossil
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Jesse is studying a blood sample that has only antigen B on the red blood cells and antibody A and antibody Rh in the plasma. Wh
GarryVolchara [31]

Answer: the bloodtype of Jesse is A Rhesus D positive

Explanation:

Antigens at present on the blood cells while antibodies are present in the serum. Thus, to prevent agglutination which occurs if the red blood cell antigen is similar to the antibody, the red blood cell of Jesse which has the B antigen will have the A antibodies produced. Thus, since the red blood cell determines the bloodtype of a person, Jesse therefore has the B bloodtype.

3 0
3 years ago
What are the necessities of sexual reproduction​
Elena-2011 [213]

Answer:

"Necessities for Sexual Reproduction: * 2 versions of individual – male version & female version * Each version must produce a gamete – egg or sperm cell *The male version “gives” his gamete to the female version * The female version grows a new individual

Explanation:

3 0
3 years ago
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Which of the following statements is false? Sunlight is the energy source for plant photosynthesis. Chlorophyll is contained in
pentagon [3]
<span>Option 1: Sunlight is the energy source for plant photosynthesis.
True: In photosynthesis, plants convert light energy from the sun to chemical energy in the form of glucose. 

Option 2: Chlorophyll is contained in organelles called chloroplasts.
True: Chlorophyll in the chloroplasts is what allows many wavelengths of light for be absorbed and used for photosynthesis. 

Option 3: A by-product of photosynthesis is carbon dioxide.
False: Plants require carbon dioxide to create glucose, and produce oxygen as a by-product. 

Option 4: Roots have tiny root hairs that maximize the plant's ability to absorb water. 
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5 0
3 years ago
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RNA interference is a mechanism of gene regulation in eukaryotes
diamong [38]

Yes it is a ORGANELLE in a eukaryotic cells

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In which phase of cell cycle does synthesis of dna take place?
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It happens during the s phase
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