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
disa [49]
3 years ago
15

How long is heart cycle​

Biology
2 answers:
Elina [12.6K]3 years ago
8 0
Lasts approximately 0.8 seconds.
Monica [59]3 years ago
3 0
0.8 seconds


Hopes this help:)
You might be interested in
Aphids are tiny insects that feed on plants. Ladybugs are helpful to plants because they eat aphids.
sergejj [24]

Answer:

Prey

Explanation:

The aphids are the prey of the ladybug.

8 0
3 years ago
Read 2 more answers
What does an Electrocardiogram do?
Bogdan [553]
I think its b
Not sure
7 0
2 years ago
Someone please calculate the ratio of offspring please help pleaseeeeeeeeeeeeeeee
Over [174]

Answer:

2. 1 Pink : 1 white

3. 1 Red : 1 Pink

4. 1 Red : 2 Pink : 1 White

Explanation:

This question involves a single gene coding for flower colour in snapdragon plants. The alleles of the gene exhibits incomplete dominance i.e. the red allele (R) ia not completely dominant over the white allele (W), hence an intermediate pink phenotype (RW) is formed. Based on this, a red snapdragon will have genotype, CRCR while a white one will have genotype, CWCW. The intermediate pink phenotype will have a genotype, CRCW.

The image attached to this question shows four crosses between different traits.

In the second cross between a pink (CRCW) and white offspring (CWCW), 2pink and 2white offsprings will be possibly produced in the ratio 1:1.

In the third cross between a red (CRCR) and pink (CRCW) snapdragon, 2 red and 2 Pink offsprings will possibly be produced in a ratio 1:1.

In the fourth cross between a pink (CRCW) and pink (CRCW) snapdragon, red, pink and white offsprings will be produced in the ratio 1:2:1.

See attached image for the complete punnet square. Note that, there was a mistake in the Genotype of the last cross i.e. pink has genotype CRCW not CWCW.

5 0
3 years ago
What must be true in order for individuals best suited for growth and reproduction in a particular environment to contribute dis
11111nata11111 [884]
<span>In order for individuals best suited for growth and reproduction in a particular environment to contribute disproportionately to the next generation natural selection must take place. Natural selection is one of the basic mechanism of evolution. This mechanism leads</span> to adaptations and adaptations contribute to survival and reproduction.
7 0
3 years ago
Crossing over occurs during prophase 1 of meiosis. Why is the process of crossing over significant for sexual reproduction?
bezimeni [28]

Answer:

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. ... It results in gametes that have unique combinations of chromosomes. In sexual reproduction, two gametes unite to produce an offspring.

Explanation:

7 0
3 years ago
Other questions:
  • As a result of the industrial revolution _____.
    15·2 answers
  • The nucleus of an atom always contains one or more?
    6·2 answers
  • Which gender realeses its seeds for new ganetophytes to grow for conifers
    9·1 answer
  • Which kind of exercise targets muscle cells instead of the cardiovascular system to meet the rapid demand for energy?
    10·1 answer
  • Twind is considered to be an abiotic factor because it.?
    12·1 answer
  • Which provides long-term energy storage? glycogen, glucagon, glucose, cellulose
    8·2 answers
  • What is a climber organism​
    9·1 answer
  • Cancer and the flu are both disease of people. what is it meant by the term disease?
    14·1 answer
  • Two species of hummingbird want the same flowers. This is an example of what kind of ecological pressure?
    13·1 answer
  • Energy plus matter is sufficient for continued development of order, complexity or growth.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!