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Arisa [49]
3 years ago
13

Fish lay thousands of eggs in one reproductive cycle. What are some factors that prevent the majority of these from developing i

nto fish that then reproduce on their own
Biology
1 answer:
lora16 [44]3 years ago
5 0
Fish are abundant but through evolution they have been made to lay a lot of eggs. This accounts for one thing, survival of the fittest. Darwinism theory of Natural Selection.
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What phenotypic ratio is expected in the offspring? Write your answer as numeric values and use a colon to separate numbers (e.g
vekshin1

Answer:

According to the statement of the question, this problem is solved by analyzing the sex chromosomes for the determination of sex, that is, as it does not present the problem (genotype and phenotype) of the parents, the indication that refers to the determination of sex, in women and his sex chromosomes are "XX" and the man who determines sex is "XY".

The result of sex in the offspring corresponding to the man, if the chromosome in the sperm fertilizes the ovule is "X", then the sex or phenotype of the individual will be "XX" (female) and if the fertilizing sperm is "Y" then the sex will be "XY" of male, the probability of being born female or male will be 50% and 50% and the ratio is 1: 1

8 0
3 years ago
Hydras and jellyfish both live in a freshwater lake that is slowly being acidified by the runoff from a chemical plant built ups
Pavlova-9 [17]

Answer:

Jellyfish

Explanation:

  • The mode of reproduction that is used by hydra to produce offsprings is asexual whereas the jellyfish is capable of reproducing sexually.
  • When an organism reproduces asexually then the rate at which the offspring are produced is faster, however, there is a lack of genetic diversity as the offsprings are produced from a single parent.
  • However, in case of sexual reproduction there is more variation and hence in case of a changing environment such as acidification of a lake by a runoff, there is a better chance of jellyfish to survive as it reproduced by sexual reproduction and thus has the ability to give rise to an offspring which will carry the trait to be more resistant.
3 0
3 years ago
Dna replicates during which phase of the cell cycle
Radda [10]

Answer:

S-Phase

Explanation:

S-Phase is when DNA synthesis/DNA Replication occurs

7 0
3 years ago
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Romashka [77]

they should be rats or mice

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Always remember quadrilateral means 4 sides
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