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viktelen [127]
3 years ago
10

Why must the number of chromosomes in the sperm and egg be half the number of chromosomes in the other cells of an organism?

Biology
2 answers:
Tcecarenko [31]3 years ago
6 0
Bc it shares both parent genes
VashaNatasha [74]3 years ago
4 0

Answer:

when fertilization takes place, the half of the chromosomes from the egg combine with the half of the chromosomes from the sperm to form a full 23 pairs of chromosomes which contain the genes of the offspring.

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Mr. and Mrs. Green have a daughter, Georgia, who was born at Riverside Community Hospital. Mr. and Mrs. Blue have a daughter, Be
Pani-rosa [81]

Answer:

Yes, Mrs Green is correct that Belle is her biological daughter

Explanation:

According to this question, Mr. and Mrs. Green is said to have a daughter, Georgia while Mr. and Mrs. Blue is said to have a daughter, Belle. Both daughters were born the same day. Hence, a controversy occured as Mrs. Green thinks that Belle is her biological daughter.

Based on the blood analysis, the following were obtained:

Mr. Green: Type A

Mrs. Green: Type A

Georgia: Type A

Mr. Blue: Type AB

Mrs. Blue: Type A

Belle: Type O

The genotype of the following blood types is as follows:

Type A - iAiA or iAi

Type B - iBiB or iBi

Type O - ii

Type AB - iAiB

From the analysis of blood types of Mr and Mrs Green, which are both type A, they can possibly produce a child with type A.

However, from the analysis of Mr. and Mrs. Blue, it is impossible to have a child with blood type O. However it is possible for Mr and Mrs. Green if they are both heterozygous (iAi × iAi). The punnet square is attached. Hence, Mrs Green is correct about her claim since Mr. and Mrs. Blue cannot have a child with blood type A.

8 0
3 years ago
Zebra use what type of energy
miss Akunina [59]
They use Geothermal Energy, which is used from plants to generate electricity.
5 0
3 years ago
lidentity the cell organelles found only in plant cells and those found in boyh animal and plant cells
Svetach [21]

Answer:

cell wall is found only in plant cell

Explanation:

cell wall and chloroplast is found only in plant cell but cell membrane,nucleus cytoplasm, ribosomes etc are found in both plant and animal cell

6 0
3 years ago
2. What is the formula of aluminum oxide?<br> a) Aljo<br> b) AIO<br> c) Al,0,<br> d) AIO
likoan [24]

Answer:

well um the answer is AI2O3

Explanation:

so i don't know why that isn't an answer sorry....

6 0
3 years ago
Heterotrophic organisms used the process of fermentation to nourish. What is fermentation?
Mama L [17]
Fermentation is a type of chemical process which enables heterotrophs to obtain energy without oxygen . Heterotrophs uses procedure of fermentatation to cultivate because in process of fermentation enzymes are the catalysts and they provide energy to heterotrophs
8 0
3 years ago
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