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bezimeni [28]
3 years ago
9

Based on these data, what was true of the world population during this time frame? A. The population size got a bit smaller. OB.

The population got a bit older. C. The number of people added to the population yearly decreased. O d The median age of the population decreased .

Biology
1 answer:
Nataly [62]3 years ago
7 0

Answer:B the age did get older

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In humans, Rh+ blood is dominant to Rh–. A man and woman are both Rh+, but their first child is Rh–.
shusha [124]

Answer:

<em> a) There is a 25% chance that their next child will be Rh-.</em>

<em>b) There is a 3/8  chance for a Rh+ girl</em>

Explanation:

As we know from the question that Rh is a dominant gene. A person having only one allele for the gene will show its effect as it is the dominant character.

This means that for a person to lack the Rh factor, it shall not have any allele with the Rh factor.

To illustrate the result, lets draw a punnet square:

            Rh+         Rh-

Rh+    Rh+/Rh+   Rh+/Rh-

Rh-     Rh+/Rh-    Rh-/Rh-

For the probability for it to be a girl, we know that there are 50-50 chances for the next baby to be a boy or a girl. The chance of being Rh+ are 75% for the next baby.

Hence,

3/4 multiplied by 1/2 is 3/8 ,which is the chance for the next baby to be a girl with Rh+ factor.

8 0
3 years ago
What does it means to be less or more dense
JulsSmile [24]
Density = mass / volume. therefore, something with a greater density either has a larger mass or a smaller volume. Think of density as how compressed something is: more "stuff" (mass) or a smaller "space" (volume) will make whatever that material is more compressed. 
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3 years ago
Which organism in a food chain is probably responsible for keeping the food web and the pyramids in their respective shapes? Why
postnew [5]

The most important  level of the food pyramid is the producer level because if something happens to that level than the whole pyramid will be affected.

Each level has their own importance:,

  • primary producers (photosinthetic organisms)
  • primary consumers (herbivores)
  • secondary consumers (carnivores)
  • tertiary consumers
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True or false: one meiotic division includes 2 separate periods of cell division, Meiosis I and II.
snow_tiger [21]
True!
hope this helps :)
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How is the primary structure of a protein determined?
igomit [66]

Answer:

The primary structure of a protein is determined by the gene corresponding to the protein. A specific sequence of nucleotides in DNA is transcribed into mRNA, which is read by the ribosome in a process called translation.

4 0
3 years ago
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