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boyakko [2]
3 years ago
13

Most___animals have developed circulatory systems to transport materials.

Biology
1 answer:
Katena32 [7]3 years ago
7 0
Im sry im not sure maybe none of the above


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Read the observation, question, and hypothesis. Then, choose the dependent variable from the list. Observation: Most hummingbird
Andrei [34K]

Answer:

hummingbird behavior

Explanation:

depends on color of bird feeder

4 0
3 years ago
Dosage compensation leads to a variety of interesting coat color patterns in certain mammals. For instance, a female cat that is
Free_Kalibri [48]

Answer:

Explanation:

The genetic determination of coat colors in calico cats is linked to the X chromosome wherein calicos are nearly always female, with one coat color  allele linked to the maternal X chromosome and a second coat color allele linked to the paternal X chromosome.

Since, the females possess two X chromosomes (XX), they can be either homozygous for each coat colour or be heterozygote (calico). But in the males, since this trait is X- linked and males have just the one X chromosome (XY), they can only possess either of the coat colour and not be an heterozygote. But an XXY male cat can be a calico due to the presence of the two X chromosomes.

6 0
4 years ago
Human blood types in the ABO blood group are identified by
malfutka [58]

Answer:

C. antigen-antibody reactions

Explanation:

human blood group is determined by the presence of antigens on the red blood cells which are specific proteins.

so specific antibodies are used against these antigens to determine the type of blood group after the reaction.

4 0
3 years ago
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by using a key sampling or a quadrat where it is placed randomly on each one

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