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Troyanec [42]
3 years ago
6

Women gives birth to a baby boy. A few years later she gives birth to another baby boy. What is the probability that her third c

hild will be a girl? Play your reasoning
Biology
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

50 %

Explanation:

It is given that a woman gives birth to a baby boy. Her second child is also a baby boy. Now she is about to give birth to her third child. We have to determine the probability of the child to be a girl.

Here, the probability of the child to be a girl would be 50 % or 1 out of 2.

There are two possibilities and the possibilities would result a boy child or a girl child. So there are two possible outcomes and is equally likely with each child birth.

Also each child birth is an independent event, so the probability that the one results will occur do not depend on the previous births.

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What are constants or controlling variables in an experiment? What would be some constants from the experiment mentioned above?
lawyer [7]

Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.

3 0
3 years ago
A population of a tree snail species has different patterns in their shells. These slight
Alja [10]

Variations can be genetic or environmental, the traits are passed from one generation to other generation of snail is from from both parents to offspring and through the environment.

The correct answer is C.

Explanation:

Genetic variation in an organism is passed to the offspring by its parents.

environmental variation is the the result of different environment with which individual adapt.

Natural selection is a process in which a suitable trait which is well adapted to the environment is passed on tho future generations.

Genetic variation is the change in DNA or gene of the individual trait. The tree snails having different pattern in their shells is due to the habitat they are living in.

The snails which have well adapted to the environment are able to reproduce and pass on the traits to their progeny. The variation is due to the traits passed from parents through the environment also.

5 0
4 years ago
Phenylketonuria, PKU, is a single-gene recessive human
astraxan [27]

Answer:

1/2

Explanation:

Let's assume that the allele "p" is responsible for PKU in the homozygous state. According to the given information, both the parents are unaffected by the disorder but have an affected child. This means that both the parents carry at least one copy of the recessive allele responsible for the disease. Therefore, the genotype of each of the parents is Pp. A cross between Pp and Pp would produce progeny in following ratio=

Pp x Pp = 1/4 PP: 1/2/ Pp: 1/4 pp

Therefore, the probability that their next child will carry just one recessive allele is 1/2.  

3 0
3 years ago
Which statement is true about lethal genes?
Korvikt [17]
I'm not completely sure, but I'm fairly certain that the answer is B.
7 0
3 years ago
What are two features that changed in the hominid skulls over time?
bija089 [108]

Answer:

The head got bigger and the face got smaller. Hope his helps.

5 0
3 years ago
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