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zepelin [54]
3 years ago
13

Humans possess two alleles, or variations, for each gene. The alleles may be the same, or they may be different. When humans rep

roduce, their alleles are separated and independently sorted into different gametes, or sex cells. So, when sex cells randomly combine during fertilization to produce offspring, there is.....
A. a low probability of survival.
B. an increase in genetic variation.
C. a decreased risk of mutation.
D. a high probability of producing a clone.
Biology
2 answers:
Mashutka [201]3 years ago
7 0

(B)  An increase in genetic variation.

posledela3 years ago
6 0

Answer: The correct answer is-

B. an increase in genetic variation.

Genetic variation occurs in case of sexually reproducing organisms as gene variants ( alleles) in reproductive cells ( gametes) are segregated and randomly fused upon fertilization.

Genes also undergo genetic recombination (during crossing over in homologous chromosomes ) during meiosis ( particularly in Pachytene stage of Prophase 1).

As a consequence, when sex cells randomly combine during fertilization to produce offspring, there is an increase in genetic variation.

Thus, option B) is the right answer.

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Certain small towns in the western United States have remained isolated and inbred since their settlement many years ago. Some a
devlian [24]

Answer:

The correct answer will be option- E

Explanation:

The founder effect is the effect observed on the gene pool when a new isolated population is founded by the individuals migrated from the larger population. After migration, they inbred among them which changes the genetic pool of the small population.

In the given question since the population of the small town remained isolated from the American population and inbred among them, therefore, changed the genetic pool of the population.  

Thus, the founder effect is the correct answer.

8 0
4 years ago
Match the following.
lianna [129]

Answer:

The correct match is given below:

Explanation:

  1. A flower containing a pistil, stamen, calyx, and corolla – Complete flower. When a flower consists of essential whorls pistil and stamen and accessory whorls calyx and corolla, the flower is said to be complete.
  2. The collective term for the petals of a flower- Corolla. The corolla is a accessory whorl which consist s of its unit called petal.
  3. It has pistils, but no stamens - Female flower. A flower with only pistil is called unisexual pistillate flower.
  4. A stalk which supports the anther – Filament. A typical stamen consists of an anther, connective and a filament.
  5. A flower that lacks one or more of the following parts: pistil, stamen, calyx, or corolla corolla.—Incomplete flower. A flower which lacks any of the essential or accessory whorl is called incomplete flower.
  6. A flower that has male parts only – Male flower.  A flower with only stamen is called unisexual staminate flower.
  7. A spore produced by meiosis – Meiospores. Spores can produced by mitosis or meiosis. If it is produced as a result of mitosis it is said to be mitospores.    

5 0
4 years ago
Which of the following is NOT true of Fungi?
makvit [3.9K]

Fungi is a separate kingdom which include all the species such as molds, mushrooms, and yeasts. Fungi have a cell wall which is made up of chitin. Most of the fungi are multicellular. Thus, the correct option is C.

<h3>What are Fungi?</h3>

Fungi is a separate kingdom of the five kingdom classification. A fungus is any member of the eukaryotic organisms which includes microorganisms such as yeasts and molds, as well as the mushrooms.

Fungi are the eukaryotic, non-vascular, non-motile, and heterotrophic organisms. Fungi may be unicellular or filamentous. Fungi reproduce through the means of spore formation. Fungi exhibit the phenomenon of alternation of generation. Fungi lack chlorophyll pigment and hence cannot perform photosynthesis like plants.

Therefore, the correct option is C.

Learn more about Fungi here:

brainly.com/question/1261179

#SPJ1

3 0
1 year ago
Which system is responsible for providing movement of the body? a. respiratory b.circulatory c.muscular d.digestive
Oksanka [162]

Answer:

muscular

Explanation:

Skeletal muscles are attached to bones through the tendons. Tendons are inelastic connective tissue fibres. Muscles that bring about movement at a joint are in pairs of antagonist muscles. A muscle is attached at two points, the origin and insertion where it affects the movement across a joint. Movement is caused by the contraction of a muscle which exerts considerable force.

8 0
3 years ago
Read 2 more answers
Describe the theory of pangenes and the blending hypothesis. explain why both ideas are now rejected. 9.2 explain why mendel's d
aleksandr82 [10.1K]

because being gay is ok


3 0
4 years ago
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