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3 years ago

Which planet has 27 known moons? A. Uranus B. Neptune C. Saturn D. Jupiter

Biology

2 answers:

ivolga24 [154]3 years ago

7 0

Uranus has 27 known moons.

Iteru [2.4K]3 years ago

5 0

Uranus has 27 known moons ,5 that are massive and 13 the orbit Uranus ring system.

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The ABO blood group assorts independently of the Rhesus (Rh) blood group and the MN blood group. Three alleles, IA , IB , and i,

Eva8 [605]

Answer:

Part 1:

The mother’s genotype is ii, rr, MN

The father’s genotype is IAIA/IAi, Rr, MM

Part 2:

Approximately 1/32 (3.125%) of children can be expected to have the stated blood types.

Explanation:

Part 1:

The mother has blood types 0, Rh- and MN. Therefore, her genotype has to be ii, rr, MN.

The father has ABO type A. His ABO genotype may therefore be either IAIA or IAi, as both are compatible with type A offspring with a type 0 mother. His Rh genotype must be rr, since his Rh- child necessarily has to have inherited one r allele from each parent. Finally, his MN genotype has to be MM since both alleles are codominant.

Part 2:

Using the given data, we build the following Punnett chart:

IA R N IA r N i R N i r N

IA R M

IA R N

IA r M

IA r N

IB R M

IB R N

IB r M X

IB r N

Note that, of all 32 possible combinations, only a single one of them (marked with “X” produces a genotype which matches the desired blood type, as follows:

genotype: IBi, rr, MN

blood type: B, Rh-, MN

3 0

3 years ago

In the context of stress hormones and the brain, _____ has a profound effect on the hippocampus, a brain structure that plays a

tatiyna

The correct term to fill in the blank would be cortisol. In the context of stress hormones and the brain, cortisol has a profound effect on the hippocampus, a brain structure that plays a pivotal role in memory. Cortisol is classified as a steroid hormone which is produced by the adrenal gland. It is deemed as the stress hormone as it is released as a response to stress as part of the fight or flight process. From studies, cortisol was found to have effect on the hippocampus when present in high levels. It damage and kill the cells in that area of the brain. The hippocampus is the area of the brain that is responsible for the long term memory storage. So, when this part is damage then the storage for our memories would surely be affected.

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3 years ago

Which unicellular organisms in the soul help plants carry out nitrogen fixation

Katena32 [7]

Answer:

Nitrogen fixing bacteria in the soil and within root nodules of some plants convert nitrogen gas on the atmosphere to ammonia.

Nitrifying- bacteria convert ammonia to nitrites.

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3 years ago

Describe how natural selection can affect traits controlled by single genes.

sukhopar [10]

. It can lead to changes in allele frequencies and the evolution oftraits.

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3 years ago

What are Hox genes?

Ede4ka [16]

Answer:

Hox genes regulate sex determination in mammals.

-Hox genes regulate flower development.

-Hox genes encode transcription factors that respond to steroids.

-Hox genes encode transcription factors with a DNA-binding domain called a homeo box and regulate development of the vertebrate body plan

- Hox genes are transcription factors that bind to specific DNA sequels called homeodomains

and regulate development of the vertebrate body plan.

Hox genes are transcription factors that bind to specific DNA sequences called

homeodomains.

Explanation:

5 0

3 years ago

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