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sammy [17]
2 years ago
15

A random change in allele frequencies over time is known as

Biology
2 answers:
salantis [7]2 years ago
3 0

Answer:

Genetic drift

Explanation:

Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. These variations in the presence of alleles are measured as changes in allele frequencies.

Sindrei [870]2 years ago
3 0

Answer:

genetic drift

Explanation:

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Which of the following statements about the germ layers is NOT correct?
ahrayia [7]

Answer:

The endoderm gives rise to the nervous system.

Explanation:

Gastrulation is the process that occurs during the third week of embryonic development and includes transformation of embryonic disc with epiblast and hypoblast into a three layered embryonic disc made up of ectoderm, mesoderm and endoderm. These are the three primary germ layers and give rise to various tissues and body organs.

Endoderm of the embryo give rise to epithelial lining of gastrointestinal tract (except the buccal cavity), respiratory tracts and other organs such as gallbladder, liver,etc. Mesoderm forms connective tissues such as bones as well as muscles and peritoneum. All the tissues of nervous system and epidermis of skin are derived from ectoderm.

7 0
3 years ago
What is the purpose of grid paper in your investigation? (1 point)
MrRissso [65]

What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.

7 0
3 years ago
Did your alien have more or less features incommon with your peers? Why do you think so?
UkoKoshka [18]

Answer:

C

Explanation:

4 0
2 years ago
I need help please thank you.
Fantom [35]
Hey!
8= B : adenine with thymine , guanine with cytosine.

9= False : its not single , *dual* helical structure.

10= Every humans' DNA is different but its as similar as our relatives' DNAs as far as i know so its False.

11 = The two backbones of the DNA molecule consists a deoxyribose sugar ^with 5 carbone^ and a phosphate so the correct answer is B

12= Procaryotes' Genomes are simpler- structured than eukaryotes' so procayotes DNA is 1/1000 of eukaryotes.I couldnt translate the options correctly (im not native sorry) but i think its B according to my knowledge of that XD

13= the amount of adenine, guanine, thymime and cytosine must be same so the correct option is %40as well.

Hope it helps!!!
#MissionExam001
7 0
3 years ago
The offspring of a sexually reproducing organism receives
Rudik [331]

Answer:

A.

half of its genetic material from each parent.

6 0
3 years ago
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