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masha68 [24]
3 years ago
13

Help please, 20 points.

Biology
1 answer:
vivado [14]3 years ago
4 0

Answer:

B. we continue to grow new neurons, but we grow fewer new neurons than when we are young.

Explanation:

Scientists have now discovered that you can grow new brain cells throughout your entire life. The process is called neurogenesis. Specifically, new brain cells–which are called neurons.

Hope this helps.

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______ is the process of mitosis and cytokinesis produce two identical daughter cells
RUDIKE [14]

Answer:

Mitotic phase

Explanation:

The mitotic phase is a multistage process during which the duplicated chromosomes are aligned, separated, and moved to opposite poles of the cell, and then the cell is divided into two new identical daughter cells.

The first portion of the mitotic phase, mitosis, is composed of five stages which includes prophase, prometaphase, metaphase, anaphase, telophase , which accomplish nuclear division before reaching the second stage which is cytokinensis which involves the physical separation of the cytoplasmic componenets into two daughter cells.

6 0
2 years ago
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
HELP ME ASAP PLEASE PLEASE PLEASE!!!!!!!! HELP ME PLEASE!!!
Irina18 [472]
1. is Biology 

2. is C - bacteria

3. is A- carbohydrates 
5 0
3 years ago
Which type of change cannot be reversed
salantis [7]

Answer:

Changes that cannot be reversed are called irreversible changes

Example: if you cook an egg or if something goes bad. these changes can not be reversed.  

3 0
2 years ago
What data do forecasters use to characterize storms while still over open water?
Maksim231197 [3]

I think its might be buoys

Explanation:

maybe im not sure

8 0
3 years ago
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