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liubo4ka [24]
3 years ago
13

Biologists in louisiana have become concerned about cadmium levels in the water near new orleans and the probability that frogs

will die out. They performed an experiment on bullfrog tadpoles to determine how toxic cadmium is to bullfrogs. Suppose a small river with a population of 10,000 frogs becomes polluted with cadmium to a level of 3 mg per gallon per day. About how many bullfrogs would be expected to die?
Biology
2 answers:
natulia [17]3 years ago
7 0

The correct answer is 3,000 bullfrogs.

The survival rate of bullfrogs increases as the amount of Cadmium decreases. This will happen because cadmium is a ubiquitous pollutant in aquatic environments. Cadmiun can alter organismal physiology and ecology affecting their growth and development.


ivann1987 [24]3 years ago
4 0

Answer: 3,000

Explanation: about 3,000

The graph reveals that about 70% of frogs will survive this dose and 30% will die. 10,000 frogs - 3,000 (30%) = 7,000 survivors.

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Mendel used single gene (or monohybrid) experiments to describe his law of segregation. He used _______ characters (or dihybrid)
allochka39001 [22]

Answer:

Law of Independent assortment

Explanation:

Gregor Mendel, who was regarded the father of Genetics, discovered principles that governs inheritance in his experiments. He discovered that the alleles of a gene will separate into gametes when he performed a crossed involving a single gene or character like height, pea color etc. He proposed his law of segregation based on this.

However, he considered two characters or genes in his cross, which he called a DIHYBRID cross. He discovered that the alleles of each different gene separates into gametes independently of one another i.e. without one gene influencing the other in each gamete. He called this principle his LAW OF INDEPENDENT ASSORTMENT.

He obtained a 9:3:3:1 phenotypic ratio for the F2 dihybrid offsprings which is only possible if each gamete equally likely contains two alleles of the two different genes in different combinations.

3 0
3 years ago
Posted this 11 mins ago. No ones answered so Imma ask again.
xenn [34]

Answer:

Lactic Acid Fermentation, which <em>produces the ATP molecule that animals and bacteria need for energy.</em> Lactic acid fermentation occurs when the ATP molecule is created without oxygen.

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8 0
3 years ago
If a pea plant that is herterozygous for rounds, yellow peas is crossed with a pea plant that is homozygous for round peas but h
Keith_Richards [23]

Answer: There re two different types of phenotypes in the offsprings that is Round yellow and Round green.

Explanation-

As per the Mendelian inheritance, Round shape and yellow color of pea are dominant over wrinkled shape and green color of pea.

According to the question, genotypes of parents are- RrYy ( heterzygous for round and yellow) and RRYy ( homozygous for round and heterozygous for yellow).

The first parent can produce four different gametes that is RY, Ry, rY, ry whereas the second parent will produce only two types of gametes that is RY and Ry.

When they are crossed, they will produce two different phenotypes in the offsprings.

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Answer:

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