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
Over [174]
2 years ago
7

Which layer is the oldest

Biology
1 answer:
daser333 [38]2 years ago
3 0
Layer c is the oldest and then it’s b and a
You might be interested in
Name two natural forces that can shape valleys and mountains?
RideAnS [48]
Volcanoes and erosion.
7 0
3 years ago
Read 2 more answers
DNA contains coded information for body structure, hibernation, height, eye color, and photosynthesis.
dedylja [7]
I believe thats true
5 0
2 years ago
You are studying two traits in fruit flies:eye color where there are two colors, brown and redwing shape where there are straigh
Irina18 [472]

Answer:

e. Red segregated from brown in meiosis I, and straight segregated from curled in meiosis I.

Explanation:

A cross between two flies heterozygous for both genes produced an offspring with the phenotypic ratio of 9:3:3:1. This ratio is expected according to Mendel's law of independent assortment, which states that alleles of the same gene assort independently during gamete formation.

Before meiosis starts in flies, a single diploid cell duplicates its DNA, so each chromosome has 2 sister chromatids that contain the same information.

  • During meiosis I, <u>the homologous chromosomes separate</u> into two daughter cells. The chromosome number is reduced by half, but each chromosome has two sister chromatids.
  • During meiosis II, <u>the sister chromatids separate</u> and each daughter cell from meiosis I divides into two new daughter cells (to get the total of 4 haploid cells).

In a heterozygous fly, each homologous chromosome contains a different allele, and the sister chromatids are copies that carry the same allele. For that reason, both traits were segregated during meiosis I.

5 0
3 years ago
Advancements in the area of agriculture has started to depend on technology sources for better yield and technology advancements
alisha [4.7K]
I not sure but my guess is D if I wrong tell me
3 0
2 years ago
Read 2 more answers
If a reptile temperature gets to low what does it need to do
Inga [223]

Reptiles require external heat to thermoregulate.  If a reptile's temperature gets too low, it will need to find a source of heat to raise its body temperature.  In the wild, most reptiles do this by basking in the sun.  In captivity, heat lights, heating pad, and other heat sources are provided to allow them to thermoregulate.

7 0
3 years ago
Other questions:
  • Guess what percent of your DNA is the same as the following organisms.
    15·1 answer
  • What does the term nucleosynthesis refer to?
    13·1 answer
  • Prior to meiosis during which stage of the cell cycle does dna replication occur
    14·1 answer
  • LAST QUESTION!!!!AND LAST TRY!!!!!!! SHARE YO SMARTNESS!!!!!WILL GIVE BRAINLIEST!!!!!! RATE AND VOTE!!
    15·1 answer
  • What is a passage followed by magma in a volcano
    8·1 answer
  • What time of the day is the hottest?
    11·2 answers
  • Which are characteristics of horesetails? Check all that apply.
    7·2 answers
  • Catastrophic events on Earth have both negative and positive effects. One positive effect is the formation of new land features.
    14·2 answers
  • How is The processes of photosynthesis and respiration are interrelated
    7·2 answers
  • A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomou
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!