What shows relationship between ancestors and their descendants

Biology

2 answers:

aalyn [17]3 years ago

4 0

The biological term is a pedigree.

Reil [10]3 years ago

3 0

Answer:

Explanation:

The main difference between ancestor and descendant is that an ancestor is a person related to you who lived a long time ago, but a descendant is a person who is related to you and who lives after you. In other words, an ancestor lived before you, but a descendant lives after you

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1. In a population of 200 field mice, 98 mice are homozygous dominant for brown fur (FF), 84 mice are heterozygous (Ff), and 18

iVinArrow [24]

A.
The genotype frequencies can be determined by dividing the number of individuals with a genotype by the total number all the individuals.
FF genotype frequency:
98÷200=0,49. There are approximately 5 homozygous dominant mice in 10.
Ff genotype frequency:
84÷200=0,42. There are approximately 4 heterozygous mice in 10.
ff genotype frequency:
18÷200=0,09. There are approximately 1 homozygous recessive mouse in 10.

B.
To determine the frequency of an allele we can divide the number of times that the allele appears by the total number of alleles.
F allele frequency:
 $\frac{(98*2)+84}{400}$ =0.7
There are 7 F alleles in 10 random alleles.
f allele frequency:
$\frac{84+(18*2)}{400}$ =0.3
There are 3 f alleles in 10 random alleles.

6 0

3 years ago

If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?

Kisachek [45]

Answer:

From what I remember in my 9th grade biology class, it's usually half that amount.

3 0

3 years ago

What happens to the phosphates when plants and animals die?

andrew-mc [135]

Answer:

When plants and animals die, organic molecules also undergoes decomposition and this causes the incorporated phosphates to go back to the soil or bodies of water.

Explanation:

Phosphates are naturally related to "phosphorus." They play a vital role in the life of animals and plants. Phosphorus can be commonly be found on the earth's land and water (although the land has a smaller amount of it). Plants naturally absorb phosphate from where they're growing. Animals take up phosphates by eating plants. The phosphate that plants get from the soil are considered inorganic. They only become organic when it is incorporated into the plants DNA (since this is an organic molecule).

So, this means that if there's a sufficient amount of phosphate, there will be more plants on earth as it is also important in the process of acquiring nutrients.

When animals and plants die, all of the organic molecules such as phosphate also breaks down and thus, it falls back to the soil or bodies of water. Then, they are ready to enter another Phosphorus cycle.

6 0

3 years ago

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Name 2 aquatic prey and their predator

MAVERICK [17]

Explanation:

prey

seals and fish

predator shark

3 0

3 years ago

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