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3 years ago

Describe the relationship between the age of rock layers and an unconformity

Biology

1 answer:

marshall27 [118]3 years ago

3 0

Answer:

Laws of stratigraphy help scientists determine the relative ages of rocks. This law states that deeper rock layers are older than layers closer to the surface. An unconformity is a gap in rock layers. They occur where older rock layers eroded completely before new rock layers were deposited.

Explanation:

The study of rock strata is called stratigraphy. The laws of stratigraphy can help scientists understand Earth’s past. The laws of stratigraphy are usually credited to a geologist from Denmark named Nicolas Steno. He lived in the 1600s.

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A new viral pathogen has emerged, and you have been asked to develop an ELISA-based detection assay to the intact virions. In or

Leya [2.2K]

Answer:

The correct answer is option d. "Polyclonal antibodies".

Explanation:

The enzyme-linked immunosorbent assay (ELISA) is very useful in comparison to other immunoassay methods for being highly accurate, sensitive and specific. Polyclonal antibodies for the detection step could be used on order to ensure that a mutation in a single surface protein would not make obsolete an ELISA used to detect a new viral pathogen. Unlike monoclonal antibodies, polyclonal antibodies are a collection of antibodies that recognize multiple epitopes of the same antigen. Therefore, a mutation in one epitope that affects the binding of one antibody would not affect the bind of the others and the ELISA will be able to recognize the pathogen.

5 0

3 years ago

A guinea pig with giant muscles is bred with a guinea pig with regular muscles. If muscle size in guinea pigs is INCOMPLETE domi

Whitepunk [10]

Answer:

Yes, they would be able to produce weak muscled guinea pigs

Please see details below

Explanation:

This question involves a single gene coding for muscle size in guinea pigs. The allele for giant muscles (G) is incompletely dominant over the allele for regular muscles (R). This means that a third intermediate phenotype (weak muscles) is produced in a heterozygous state.

According to this question, a guinea pig with giant muscles (GG) is bred with a guinea pig with regular muscles (RR). The following gametes will be produced by each parent:

GG - G and G

RR - R and R

Using these gametes in a punnet square (see attached image), the following proportions of offsprings will be produced:

GR, GR, GR, and GR

This shows that all the offsprings (100%) have weak muscles, hence, YES is the answer to this question.

5 0

2 years ago

Read 2 more answers

A scientist samples a population of butterflies and finds that 56% are heterozygous at a particular locus. If the population is

d1i1m1o1n [39]

0.44 the frequency of the homozygous individuals in this population.

What is Hardy-Weinberg principle ?

The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

From the Hardy Weinberg Law of Population and Genetics,

We have

x²+2xy+y²=1 and

x+y=1

where

x = frequency of the dominant allele in the population

y = frequency of the recessive allele in the population

x2 = percentage of homozygous dominant individuals

y2 = percentage of homozygous recessive individuals

2xy = percentage of heterozygous individuals

Given 2xy = 0.56

from here, y=0.28/x, (the frequency of the recessive allele ) can be obtained

we need to find 'x'

recall, x+y=1, x=1-y

substituting this gives us

y=0.28/(1-y), which becomes,

y(1-y)=0.28

y²- y + 0.28 (quadratic equation)

Solving this to find 'y' gives two imaginary values of y = 0.44 but ,

There is no imaginary solution .

Learn more about Hardy Weinberg Law of Population

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4 0

2 years ago

Determine whether each statement refers to the central nervous system or the peripheral nervous system.

marin [14]

Answer and Explanation:

Consists of the brain and spinal cord

- central nervous system

Consists of the nerves outside the brain and spinal cord

-peripheral nervous system

Collects information from sensory organs

-peripheral nervous system

Processes information from sensory organs-central nervous system.

The CNS is made up of the brain and the spinal cord. The PNS consists of nerves, which link the CNS to various receptors and effectors.

3 0

3 years ago

Read 2 more answers

The leaves of a sensitive plant close whenever any part of the plant is touched because of a???

nadya68 [22]

It is thigmotropism because it is not affected by gravity or light.

6 0

3 years ago