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stepan [7]
3 years ago
7

9. What are mutations, and how do they increase the genetic variation within a species?

Biology
1 answer:
leva [86]3 years ago
5 0

Mutations are changes that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.

They increase the genetic variation within a species because they can create entirely new alleles in a population, random mating, random fertilization, and recombination between homologous chromosomes during meiosis which reshuffles alleles within an organism's offspring.

HOPE THIS HELPS :)

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Assuming no crossing over between the gene in question and the centromere, during what phase of meiosis do alleles segregate?
choli [55]

Answer:

During Anaphase stage

Explanation:

Meiosis is the type of cell division employed during gamete formation when each resulting gamete (daughter cell) has their chromosomal number reduced by half. Meiosis occurs in a two step division; Meiosis I and II. Meiosis I involves the separation of homologous chromosomes (similar but non-identical chromosomes received from each parent) while Meiosis II involves separation of sister chromatids (replicated chromosomes).

Alleles are present on the chromosomes which segregate or separate during the anaphase stage. Alleles received from each parent are separated in Anaphase I of meiosis I, which the identical replicated alleles are separated in anaphase of meiosis II.

7 0
3 years ago
How many bones are there in donkey​
Dmitry [639]

Answer:

205 bones

Explanation:

Donkeys and horses share the same skeletal system. Donkey’s bones are slow to mature in diameter and length.

3 0
3 years ago
Changes in temperature, pressure, and _____ affect gases more than solids or liquids.
sleet_krkn [62]

Answer:

Changes in temperature, pressure, and Volume affect gases more than solids or liquids.

Explanation:

hmm I guess..........

4 0
3 years ago
BRAINLIESTTTT ASAP!!!<br><br> please explain your answers. :)
QveST [7]
The two are potassium and rubidium. Why? Na is an alkali metal. As you go down the metals become more reactive. 
Calcium has 20 protons. Why? The atomic # is 20 (the one at the top).
It has 20 neutrons. Why? The atomic mass (the number on the bottom) is ~40, ignoring electron mass. 40- 20 protons = 20 neutrons. 
It has 20 electrons. 
Why? The # of protons and electrons is the same. Ions aren't on the periodic table.
Please mark brainliest if I helped you!
6 0
3 years ago
Read 2 more answers
________ is the quality of the voice that is produced from sound vibrations in the pharyngeal, oral, and nasal cavities
djyliett [7]
Resonance is the quality of the voice that is produced from sound vibrations in the pharyngeal, oral, and nasal cavities.

Hope this helped, have a great day! :D
3 0
3 years ago
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