How many positive particles does zinc have? *

A population of lizards lives in a marsh near the ocean. Members of this population have striped tails that can be yellow, orang

ladessa [460]

The question is incomplete as it does not have the options which are:

A. Speciation

B. the founder effect

C. natural selection

D. gene flow

Answer:

Founder effect

Explanation:

The founder effect is the phenomenon observed when the members of the population establish a new population.

This effect is observed due to the immigration and emigration of the individuals of the population.

In the given question, the four lizards swept away with the ocean and reached a new island. There they reproduced and flourished and by the time they formed the new population with orange stripes. This is the case of the genetic drift especially the founder effect in which the new alleles for the orange tail expressed.

Thus, the founder effect is the correct answer.

4 0

3 years ago

Identify all the amino acid-specifying codons where a point mutation (a single base change) could generate a nonsense codon.

Murrr4er [49]

Answer:

Glutamic Acid (Glu): codons GAA, GAG

Glutamine (Gln): codons CAA, CAG.

Lysine (Lys): codons AAA, AAG, UCG

Serine (Ser): codons UCA, UCG

Leucine (Leu): codons UUG, UUA

Tyrosine (Tyr): codons UAC, UAU

Tryoptophan (Trp): codon UGG

Arginine (Arg): codons CGA, AGA

Glycine (Gly): codon GGA

Cysteine (Cys): codon UGU

Explanation:

Non sense codons are: UAA, UAG, UGA. Then following the genetic code (see attached file) a single base substitution in any of the codons indicated in the answer could generate a stop codon. This single base substitution might happen in the first, second or third base of the codon.

7 0

4 years ago

The cardiovascular system is also known as the

ELEN [110]

Answer: circulatory system

Explanation:

6 0

3 years ago

The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the ________

Ilya [14]

The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the pampiniform plexus of veins. The pampiniform plexus helps to regulate testicular temperature, allowing sperm maturation. It surrounds the testicular arteries and works as a countercurrent heat-exchanger system to cool the arterial blood before entering the testes. This is because the sperms can not develop if the testis is at body temperature.

8 0

3 years ago

Abductors enable efficient bipedal motion by contracting parts of the gluteals that attach to the ilium and allow humans to step

miss Akunina [59]

Answer:

a. True

Explanation:

Since , abductions, particularly the minimus and gluteus medius , are active on the side of the leg which is in contact with the ground . This is to avoid the tendency of gravity to cause the downward motion of the hip on the opposite side . In addition, the lateral muscle and paraspinal muscles of the trunk are active on the side of the swinging leg to avoid the downward motion of iliac crest on side .

5 0

3 years ago