1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hoochie [10]
3 years ago
14

The random alignment of maternal and paternal homologous chromosomes during metaphase I is one of the ways genetic variability a

mong gametes comes about. For example, it is possible for an organism with 4 pairs of homologous chromosomes to produce gametes with up to 16 different combinations of maternal and paternal chromosomes. In the case of humans with 23 pairs of chromosomes, there are over 8 million possible combinations. How many possible combinations of maternal and paternal chromosomes are possible in the gametes of an organism with a diploid number of 16 chromosomes ?
Biology
1 answer:
IgorLugansk [536]3 years ago
7 0

Answer:

256 possible combinations.

Explanation:

Homologous chromosomes consist of one maternal chromosome and one paternal chromosome that pair up during meiosis. They have the same genes in the same loci, but not alleles.

During metaphase I they line up in a random order, this means there are different combinations of maternal and paternal chromosomes for each gamete.

There are 2 alternatives for each pair of homologous chromosomes. We calculate then the number of gametes with different chromosomic combinations as 2^n, being n the number of homologous pairs or haploid number of an organism.

For an organism with 4 pairs of homologous chromosomes: 2^4 = 16

For humans with 23 pairs of chromosomes: 2^23 = 8,388,608‬

For an organism with a diploid number of 16 chromosomes, we have 8 pairs of homologous chromosomes (haploid number, one set of chromosomes):

2^ 8 = 256 possible combinations of maternal and paternal chromosomes.

You might be interested in
For a normal person, about how long does a cycle of sleep (from stage 1 to stage 4 and back again) last?
balandron [24]
Hey You!

It lasts about 90 minutes for a normal person.
5 0
3 years ago
How do whales,bats,and dolphins use echolocation.
zvonat [6]

B. To orient themselves and to find food

Since they cannot see very well or even at all in some cases, these animals use echolocation instead to orient themselves, to find where they are, and to find food.

7 0
3 years ago
Read 2 more answers
During glycolysis, two hydrogen atoms are picked up by the coenzyme nicotinamide adenine dinucleotide (NAD). What B vitamin is r
Maslowich

Answer:

Niacin (Ans. A)

Explanation:

Nicotinamide adenine dinucleotide (NAD) is known as important cofactor which help in carrying electrons from one reaction to another reaction in the cellular respiration process.

Cells are able to restore performed compounds which are containing a pyrimidine base precursor vitamin for the synthesis of NAD: nicotinamide, nicotinic acid, and nicotinamide riboside.

These elements are taken up from the diet whos containing vitamin B3. Nicotinamide, and nicotinamide riboside both can be absorbed from the gut. Niacin or vitamin B3 also produced within cells with the help of cellular digestion of NAD+.

7 0
3 years ago
Explain the difference between negative growth rate and zero growth rate.​
ziro4ka [17]

Answer:

Negative growth rate is when a population's average number of deaths is greater than its average number of births. Zero growth rate is when the average number of deaths equals the average number of births.

Explanation:

4 0
3 years ago
Read 2 more answers
What molecule is used by the enzyme ATP synthase to form ATP? ADP NADH ATP FADH 2
ehidna [41]

Answer;

ADP

Explanation;

-ATP molecule actsas the major energy molecule used by the cells. ATP synthase located in the inner membrane of the mitochondria, catalyses the formation of ATP, as a result of protons concentration gradient.

-The enzyme generates ATP from adenosine diphosphate and an inorganic phosphate through a process called oxidative phosphorylation, which is the process by which enzymes oxidize nutrients to form ATP.

8 0
3 years ago
Read 2 more answers
Other questions:
  • How does water get the leaves in the tops of the tallest trees against the force of gravity? Name property responsible for this
    8·1 answer
  • Which phenotypic change is genetic?
    14·1 answer
  • How does proper waste management help prevent pollution
    12·1 answer
  • Consuming alcohol inhibits the release of ADH. As a result __________.
    12·1 answer
  • 1) a student wondered if butterflies would show any differences in their wing color if, as caterpillars, they were grown in the
    9·1 answer
  • How does biodiversity reduce one species’ dependence on another species? Explain, and provide an example.
    7·1 answer
  • How does artificial selection change a population over time?
    15·2 answers
  • Help will give brainliest
    11·1 answer
  • In simple dominance, the dominant allele the recessive allele.
    7·1 answer
  • (ANSWERED)Suppose you seal a house plant in a transparent glass container. What about the scenario would lead to the plant's dea
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!