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blagie [28]
1 year ago
12

I need help with this

Biology
1 answer:
Fittoniya [83]1 year ago
6 0
A. Sister chromatids. B. Homologous chromosomes. C. Meiosis 1. D. Meiosis 2
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Charles Darwin and Alfred Wallace first suggested: A. The idea that evolution might occur. B. A theory to explain how evolution
Natasha2012 [34]

Answer:

c

Explanation:

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3 years ago
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How do plants play a role in carbon cycle?
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Plants absorb carbon dioxide and water to make their own food and release oxygen 
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This organism uses its whiplike flagellum to propel itself through water. It has chloroplasts that allow it to perform photosynt
Flura [38]

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Bacteria

Explanation:

The organism is bacteria because it performs photosynthesis and can propel itself with flagella. It is not an animal because it can photosynthesize and it is not a plant because it has flagella like bacteria does.

4 0
3 years ago
Need help on checking my answers! The ones circled in yellow are the ones that I believe the answers are. Please and thank you
nirvana33 [79]

This is cyclic change because the population is consistently going up and back down.

8 0
2 years ago
a man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to
Nonamiya [84]
This information is not enough to tell which of the traits-blood group A or O is dominant.
It is known that blood groups A and B are codominant, which means both will express if found together in a heterozygote. However, blood group O is recessive. But from this information, you can conclude that blood group O is dominant. Why is that so?
Let's imagine that father's genotype is AA and mothers' genotype OO and cross them:
Parents:               AA    x    OO
Offspring:      AO    AO   AO    AO
Since we have information that daughter has blood group O, we can conclude that O is dominant over A and mask it. This is not true! In this case, the daughter will have blood group A.

Mother's genotype surely is OO (because O allele is recessive, so to express a recessive trait both alleles must be recessive). But, the father cannot be AA, because it must give O allele to the daughter so she can have genotype OO and blood group O. So, the father's genotype is AO.  Let's take a look at that crossing:
Parents:         AO   x    OO
Offspring:   AO   AO   OO   OO
Thus, in this case, daughter can have genotype OO and blood group O.
3 0
3 years ago
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