首页
登录
职称英语
Scientists have long speculated as to the extent that inbreeding cont
Scientists have long speculated as to the extent that inbreeding cont
游客
2024-01-11
35
管理
问题
Scientists have long speculated as to the extent that inbreeding contributes
to the decline and eventual extinction of large assimilated populations, most
agreeing that in natural populations the impact of inbreeding depression on
Line population survival is insignificant in comparison to that of demographic and
(5) environmental variables. While there is ample evidence of fitness reduction due
to inbreeding depression in captivity, no field studies on natural populations
have been conducted to test the proposed effect on extinction.
However, Saccheri recently found in his study of a large metapopulation of
the Glanville .fritillary butterfly that extinction risk increased significantly
(10) with decreasing heterozygosity, an indication of inbreeding, even after
accounting for the effects of the relevant ecological factors. Rate of maturation,
larval survival, adult longevity and egg-hatching rate were found to be adversely
affected by inbreeding, and appear to be the fitness components underlying the
relationship between inbreeding and extinction. One wonders, nevertheless,
(15) how applicable these results would be to the increasing number of species with
small isolated populations due to habitat loss and fragmentation. [br] According to the passage, inbreeding affects all of the following aspects of Glanville fritillary butterfly biology EXCEPT
选项
A、Habitat loss
B、Incubation success
C、Physical being of larvae
D、Life span of adults
E、Rate of maturation
答案
E
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3352660.html
相关试题推荐
Scientistshave______foryearsthatturbulencewithinthegaseouscloudsfound
Inthenineteenthcentury,scientistsshowedthatmanyfamiliarsubstancessuch
OCCLUDED:A、unhinderedB、interconnectingC、speculatedD、reducedE、prolongedA
Feministcriticshavelongdebatedtheextenttowhichgenderplays
Feministcriticshavelongdebatedtheextenttowhichgenderplays
Feministcriticshavelongdebatedtheextenttowhichgenderplays
Feministcriticshavelongdebatedtheextenttowhichgenderplays
Scientistsresearchinghypnosishaveuncoveredevidencethatcounte
Scientistsresearchinghypnosishaveuncoveredevidencethatcounte
Scientistsresearchinghypnosishaveuncoveredevidencethatcounte
随机试题
女士们、先生们,欢迎大家出席今年首场外交部例行记者会。在新的一年里,我们将继续通过这个平台,向大家更好地介绍中国外交。我们也希望媒体的朋友们能够向世界报
以深刻的反封建精神和现代意识,以新颖独特的方法,手法形式,显示了和过去文学不同的
在多年冻土地区修建重要工程建筑物时,下列做法合适的是()。A.避开含土冰层、
男性,25岁。5年来上腹痛,服药后短时间即缓解。近来因天气转冷,工作劳累又发。上
为判断固定资产的总体合理性,审计人员通常可采用的分析程序有:A.分析本期与以前各
下列属于批复的写作要求的是:() A.一文一复 B.慎重及时 C.明确
影响学生学习特点的内部因素是()。A.学生掌握的学习方法 B.学生的心理
下列关于等额年金的说法正确的是()。A.等额年金是发生在各期期初的一个等额资金序
国家规定的用人单位职工名册的内容须包括劳动者的()。A.学历证书号码
肝性脑病患者可采取下列何种溶液灌肠A.肥皂水 B.稀醋酸液 C.地塞米松
最新回复
(
0
)