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Aneli [31]
3 years ago
8

9. Circle the letter of each sentence that is true about water's surface tension.

Biology
1 answer:
Finger [1]3 years ago
3 0

Explanation:

that boy sus please vote red oh dang not the right app my bad

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Yuki888 [10]
The answer is:  "chaparral" .
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7. Why do scientists think that photosynthetic prokaryotes were probably not the first life forms on Earth?
Rasek [7]
Microbes were the first inhabitants of Earth. They are single-celled organisms, like bacteria, fungi, and protozoa. Microbes are still found just about everywhere today, thriving in boiling hot thermal springs 
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3 years ago
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After running in a marathon race in july, joshua felt weak and his body weight was about 3% less than before the race. based on
olga_2 [115]

Answer:

Dehydration

Explanation:

Dehydration is the condition of the body which involves the loss of body fluid compared to the amount of water the body gets. Water is an important constituent of the human body making up to about two-third of the body. The normal body metabolism is affected when the amount of water in the body drops below the required level of water necessary for optimal functioning of the body.  

Athletes usually suffer from dehydration, most especially long distance runners, as they tend to lose a lot of body fluid through sweating while the body tries to regulate the body temperature during the race. When the body is dehydrated, the heart works harder to pump blood to various parts of the body leading to loss of strength of the muscles.  

Common signs a dehydrated person shows include feeling tired and lightheaded, loss of body weight etc.

3 0
2 years ago
genetics book g how do you know that only a single gene is responsible for he color diferences between these snakes?
mariarad [96]

Answer:

Here is the full question:

An albino corn snake is crossed with a normal colored corn snake. The offspring are all normal-colored. When the first generation progeny snakes are crossed among themselves, they produce 32 normal colored snakes and 10 albino snakes.

a. How do you know that only a single gene is responsible for the color differences between these snakes?

b. which of these phenotypes is controlled by the dominant allele?

c. a normal colored female snake is involved in a test cross. This cross produces 10 normal colored and 11 albina offspring. what are the genotypes of the parents?

Explanation:

First of all, in genetics, Phenotype are the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype can be determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences on these genes.

Allele, which can also be called allelomorph, is any one of two or more genes that may occur alternatively at a given site on a chromosome. Alleles may occur in pairs, or we may have multiple alleles affecting the phenotype of a particular trait. The combination of alleles that an organism carries is its genotype. If the paired alleles are the same, the organism’s genotype is said to be homozygous for that trait. If they are different, the organism’s genotype is heterozygous. A dominant allele (A) will override the traits of a recessive allele (a) in a heterozygous pairing.

(a) In the question, we have two phenotypes seen in the second generation of this cross: normal and albino. Therefore, only one gene with two alleles is needed to control the phenotypes like colour of the snakes observed. The 3:1 ratio of these phenotypes in the F2 generation will be seen only if a single gene is involved.

(b) The allele controlling the normal phenotype (A) is dominant to the allele controlling the albino phenotype (a).

(c) The male parent’s genotype is aa. The normally colored offspring must receive an A allele from the mother, so the genotype of the normal offspring of the testcross is Aa. The albino offspring must receive an a allele from the mother, so the genotype of the albino offspring of the testcross is aa. Thus, the female parent must be heterozygous Aa.

7 0
3 years ago
#14 &amp; #15<br> Multiple choice
natka813 [3]
14 should be B if I can remember correctly, 15 is C
5 0
3 years ago
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