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Solnce55 [7]
2 years ago
3

Sand spinifex grass is adapted to growing on sand dunes. It is a rapidly spreading plant and the creeping runners produce new ro

ot systems. Which of these best explains the benefits of these features?
Biology
1 answer:
worty [1.4K]2 years ago
3 0
The development of roots and being a creeping runners of the sand spinifex is very helpful for it to be able to hold on to the ground since even with the lightest wind, the sand can get carried away. This allows the sand to get trapped by the root system. 
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Tall pea plants are dominant, while short plants are recessive. In a cross between a purebred tall plant and a purebred short pl
zloy xaker [14]

Answer:

1. tall (or heterozygous)

2. 3:1

3. carriers

4. Each parent organism contributes one copy of its alleles in a seemingly random fashion to its offspring, as meiosis to create gametes (egg or sperm cells) reduces the number of genes by half. Therefore, each gamete contributes only one allele.

5. A Punnett square is a diagram used to map out the possible genotypes of a child given the genotypes of its parents. In a Punnett square, the genotype of one parent is listed in the first row of the square, and the genotype of the second parent is listed in the first column. Then, in the middle squares, all possible genotypes of their offspring are listed, and the phenotypes are calculated using the law of dominance.

6. Purebred strains of organisms always produce heterozygous offspring in the first generation, with all members of the first generation exhibiting the dominant trait for the gene of interest. The second generation typically has a 3:1 mix of dominant and recessive phenotypes, respectively.

7. Punnett squares predict that the second generation of two distinct purebred homozygotes for a trait will have a 3:1 ratio of dominant to recessive traits. Mendel did careful statistical analysis on his hybridization experiments and found that, for each of his seven characteristics of interest, the ratio was approximately, but not exactly, 3:1. Therefore, Mendel's experimental observations match the predictions of Punnett squares quite well.

Explanation:

8 0
2 years ago
A teacher asks her students to find the average mass of a chicken egg. Each student is provided a carton of a dozen eggs and is
ad-work [718]

If you have all the eggs weighed at different times and then write them down, after that add all of the number together. Divide the number by the amount of eggs. BOOM ANSWER!

8 0
2 years ago
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Rapid defibrillation is a link in the adult chain of survival. Why is this important to survival?
Rudik [331]

Answer: It helps in the removal of abnormal heart rhythm

Explanation:

The AHA's chain or survival includes many steps in it. This is required to save the life of a person in emergency conditions.

One of the main step in AHA's chain of survival includes Rapid defibrillation which is given to a person after CPR.

This condition eliminated the abnormal cardiac rhythm. Electric shocks are given by the medical team so as to treat the emergency conditions like heart attack, cardiac arrest, et cetera.

5 0
2 years ago
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Which term best describes the difference in colors of the birds below?
NeX [460]

Answer:

<u><em>The correct option is C) genetic variation</em></u>

Explanation:

Genetic variation can be described as the differences present in the genetic material i.e DNA of organisms present in a population. Genetic diversity allows organisms of a species to better adapt to an environment. A population in which the genetic variability is scarce might become wiped out by a disease or an invading predator.

As the birds show different variations hence the term that best described them is genetic variation.

6 0
2 years ago
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Carine went to the doctor for a physical. Her blood pressure was 80/50. What describes Carine’s condition, and what is the most
Korolek [52]

Hello!! Since there is no mention of weight in the question, I would assume that she is pregnant. Whenever someone's blood pressure is low, it is referred to hypotension. Whenever someone's blood pressure is high, it is referred to hypertension. I would say your best answer is A - She has hypotension because she is pregnant. I hope that is the right answer you are looking for. Have a great day!! :)

3 0
2 years ago
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