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saul85 [17]
3 years ago
8

A scientist discovers a star with three planets orbiting around it. This is an example of a

Biology
1 answer:
lianna [129]3 years ago
6 0

Answer:

solar system

Explanation:

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Small organelle in the nucleus that makes ribosomes.
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Answer:The Nucleolus

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How many double-helical DNA molecules will be present in the sperm and egg cells of dogs that are diploid animals that contain 7
AleksAgata [21]

Answer:

39 double-helical DNA molecules will be presenet in sperm and 39 in egg.

Explanation:

Each chromosome is made up of histone protein and a molecule of DNA.

Each cell contain double number of chromosomes (2n) except a few exceptions like sperm (1n) and egg (1n).

Human body cells contain 46 chromosomes while sex cells contain 23 chromosomes because of meiosis. Similarly dog cells contain 78 chromosomes while their gametes i.e egg and sperm each contain 39 chromosomes. The fertilization of sperm and egg will restore the chromosome numbers.

<em>As there is only one double helix DNA present in chromosome, so there would by 39 double helix DNA in sperm and 39 double helix DNA in egg. </em>

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4 years ago
________ is a common sexually transmitted infection (sti) that can result in death if not treated.
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There's a couple I think it could be.....I'm gonna go with syphilis??
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Why arent all plants green ?
fredd [130]
Chlorophyll pigment is always green. Plant leaves and stems aren't always green because they have many pigments other than chlorophyll. Pigments are molecules that absorb specific colors of light and reflect other colors, depending on their chemical structure. The reflected colors are what give pigments their color.
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Look at the image. Recall the structures and parts of a flower. Use the drop-down menus to answer each question.
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The material covering the bee is called pollen, this material is produced from small spores that come from male trees and flowers.

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