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pishuonlain [190]
3 years ago
12

A woman with blue eyes (bb) and a man with brown eyes (bb) has a child. what is the percentage change that the child will have b

lue eyes?
Biology
2 answers:
velikii [3]3 years ago
5 0

Answer:

The percentage chance that the child will have blue eyes is: 25%.

Explanation:

According to Mendel laws, there would be a 50% chance of having a child that is heterozygous for the gene (Bb) but happens to express brown eyes because this is the dominant allele;  there's 25% chance of having a child who  is homozygous for the dominant allele (BB) and will also have brown eyes; finally, there's a 25% chance of having a child who is homozygous for the recessive allele (bb) so their phenotype will be blue eyes.

sdas [7]3 years ago
3 0
They can have As geneticists both can be either (bb) because most brown-eyed  people have homozygous for the relevant.

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What factors determine if animals and plants will form fossil?
Law Incorporation [45]

Answer:

The presence of high temperature and pressure, soil as a medium and also microbes are the factors that determine if animals and plants will form fossils.

Explanation:

As plants as well as animals dies in moist condition, and when buried inside the mud or silt. The soft tissues present starts degrading leaving behind the hard bones and also shells. Over the period of time various layers gets formed over it. As a result of high pressure and temperature fossils are formed. In case of animals the mineralized shell i.e. trilobite and ammonite form the fossils.  It takes around 10,000 years for the formation of fossils the time period is minimum it may vary according to the species.

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3 years ago
A squirrel has 40 chromosomes in a somatic cell.
zhenek [66]

Answer:

How many homologous pairs are found in a diploid cell? 22 pairs

b. How many single chromosomes (unreplicated) are found after the Sphase? 46 chromosomes  

c. How many chromosomes are present in one cell at the end of meiosis II?  15 chromosomes

d. How many chromatids will be found at the beginning of meiosis I? 92 chromatids  

e. How many cells will be produced at the end of meiosis II? four

f. How many tetrads will form in mitosis?  23 different tetrads

Explanation:

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4 0
3 years ago
Sketch a simple model that shows how the moon reflects light from the sun label the following in you diagram:earth sun moon sunl
vesna_86 [32]

The solar system is composed of the sun and the planets.

<h3>What is the solar system?</h3>

The solar system is composed of the sun and the planets. The sun lies at the center of the solar system and the planets move around  the earth in concentric circles.

Given that the earth is the only inhabited planet, it holds a central place in the solar system. The moon is a non luminous surface. It reflects the light that hits it from the sun to the earth.

The sun and other stars are the luminous bodies in the solar system.

Learn more about solar system:brainly.com/question/12075871

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7 0
2 years ago
Which of the following is true? A. all organisms obtain water from food
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Answer: Option D. Water is important to some of organisms.

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Water, with the chemical formula H2O, is a substance that forms the major percentage of many living cells, tissues and organs. Plants and animal cells rely on water to dissolve nutrients, aid transportation of materials within and out of the cell etc

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5 0
3 years ago
Read 2 more answers
Write a paragraph on testing probability
VashaNatasha [74]

Explanation:

Probabilities are described as ratios of favorable event outcome to the total number of event outcomes.

This is written as...

P (E) =\frac{n(E)}{n(S)} \\

where...

E= the number of times the event occurs

S= the number of trials

In biology experiments, hypotheses are formed based on research questions, and tested with the use of variables  to provide a particular outcome. Statistics allows for testing data for consistency with the hypothesis, while statistical probability testing can be used in experiments to determine a range of outcomes, from genetic inheritance, evolutionary rates to theoretical experimental results.

In these statistical models, probability distributions are functions that give probabilities for certain event outcomes within an experiment (a set of trials). These may be either continuous, taking a value within a range of two numbers; or discrete, which may be either of two specified values. Discrete probability distributions list each value that a random variable may possibly take on.

Further Explanation:

For example, two types of probability distributions are employed in experimental biology:

Binomial distributions, which are discrete distributions,  provide probability of a certain number of successful events for x  a random variable, in a specific number of trials, n; here, the probability of success of an individual trial is constant at P and only one of two outcomes are possible- this is sampling with replacement.

where...

b(x;  n, P)-the probability that an experiment of n trials results in x successes

nCx- the number of combinations of n things at r time

b(x;  n, P) = [ nCx ]* P^{x}  * (1-P)^{n-x}\\

<em>This is often used in determining potential outcomes before data collection.</em>

A type of continuous distribution, the student's t-test, compares standard deviations and means from two sets of samples or groups to check for significant differences between them.

t= \frac{(x_{1} - x_{2}) }{\sqrt{(\frac{(S_{1}) ^{2} }{n1} }+ (\frac{(S_{2}) ^{2} }{n2 }}

where...

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  • n1 and n2 are sample sizes in samples 1 and 2 respectively

The null and alternate hypotheses typically theorize the likelihood and significance of certain event outcome probabilities. Critical values of t, along with degrees of freedom are used to determine a range of probable outcomes; probability or p- values along with this range, are used to determine whether either hypothesis is rejected or accepted.

<em>For instance, significant differences between an experimental control and a specific treatment group would show that these occurrences are not due to sampling errors or random chance...</em>

Learn more about calculating probability at brainly.com/question/4021035

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5 0
3 years ago
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