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Diano4ka-milaya [45]
3 years ago
12

What determines the sex of an organism, the male sperm cell or the female egg cell? ______

Biology
2 answers:
Liono4ka [1.6K]3 years ago
4 0

Answer:

sperm cell contains the x or y

Explanation:

please give brainliest

KonstantinChe [14]3 years ago
3 0

Answer:

The male sperm cell

Explanation: the male sperm cell carries the chromosome that determines the sex of the zygote.

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41. A student studying the biosphere makes a list of biotic and abiotic characteristics of various biomes. Which characteristic
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· Abiotic factors are nonliving, such as temperature, sunlight, and soil in an ecosystem.
· Biotic factors are the living parts of an ecosystem, such as plants and animals.

Given the above, the biotic factor listed is evergreen trees in a coniferous forest.

The other options - soil, precipitation, and temperature - are abiotic.

Answer:
<span>C. evergreen trees present in a coniferous forest
</span>
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3 years ago
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A species of elm has winged-seeds. How would biologists explain how a species of elm with winged-seeds evolved from an ancestral
dimaraw [331]

Answer:

In an ancestral elm species, mutations gave rise to the phenotypic trait "winged-seeds". Subsequently, selection favored elm plants with winged-seeds that diverged over time to become a separate species

Explanation:

A mutation is a genetic change in the DNA sequence. In general, mutations have a negative impact on the fitness of the individual (i.e., mutations are generally deleterious) and therefore they disappear from the population. However, there are situations where mutations are beneficial and confer an adaptive advantage, thereby increasing their frequency in the population. In this case, mutations associated with the formation of winged-seeds conferred an adaptive advantage (i.e., higher seed dispersal capacity) to individuals who had this phenotypic trait, thereby these individuals had more chances to reproduce and pass their genes to the next generation. Eventually, Elm plants with winged-seeds accumulated sufficient genetic differences to prevent interbreeding, leading to the formation of a separate species.

4 0
3 years ago
Identify the four postulates of natural selection. select all that apply.
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4. natural selection - refers to those organisms that survive because they adapt to their surroundings better than those who will die
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3 years ago
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